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[GenAI] Improve coverage for org.apache.avro:avro:1.12.1 using gpt-5.5 (#8590)
* Checkpoint for coverage improvement of org.apache.avro:avro:1.12.1 * Dynamic-access coverage for org.apache.avro.reflect.ReflectionUtil (40/41) * Dynamic-access coverage for org.apache.avro.io.FastReaderBuilder (41/41) * Native metadata for org.apache.avro.io.FastReaderBuilder__native_batch_2 * Update generated library support for org.apache.avro:avro:1.12.1 * Improve coverage for org.apache.avro:avro:1.12.1
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‎metadata/org.apache.avro/avro/1.12.1/reachability-metadata.json‎

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"reflection" : [
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{
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"condition" : {
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"typeReached" : "org.apache.avro.Schema"
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"typeReached" : "org.apache.avro.Schema$Parser"
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},
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"type" : "java.lang.StackTraceElement[]"
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"type" : "com.fasterxml.jackson.core.sym.CharsToNameCanonicalizer$Bucket[]"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.util.internal.JacksonUtils"
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},
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"type" : "com.fasterxml.jackson.databind.cfg.CoercionAction[]"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.Schema"
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},
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"type" : "com.fasterxml.jackson.databind.ext.Java7SupportImpl"
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"type" : "com.fasterxml.jackson.databind.ext.Java7SupportImpl",
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"methods" : [
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{
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"name" : "<init>",
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"parameterTypes" : [ ]
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}
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]
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.util.internal.Accessor"
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"typeReached" : "org.apache.avro.Schema"
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},
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"type" : "org.apache.avro.Schema$Field"
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"type" : "java.lang.Class"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.util.internal.Accessor"
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"typeReached" : "org.apache.avro.reflect.ReflectData$ClassAccessorData"
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},
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"type" : "org.apache.avro.io.parsing.ResolvingGrammarGenerator"
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"type" : "java.lang.Object"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.Schema"
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},
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"type" : "java.lang.String[]"
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"type" : "java.lang.StackTraceElement[]"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.util.springframework.ConcurrentReferenceHashMap"
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"typeReached" : "org.apache.avro.reflect.ReflectDatumReader"
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},
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"type" : "org.apache.avro.util.springframework.ConcurrentReferenceHashMap$Segment[]"
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"type" : "java.lang.String"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.Schema$Parser"
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"typeReached" : "org.apache.avro.Schema"
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},
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"type" : "com.fasterxml.jackson.core.sym.CharsToNameCanonicalizer$Bucket[]"
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"type" : "java.lang.String[]"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.util.internal.JacksonUtils"
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"typeReached" : "org.apache.avro.reflect.ReflectDatumReader"
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},
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"type" : "com.fasterxml.jackson.databind.cfg.CoercionAction[]"
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"type" : "java.lang.String[]"
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},
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{
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"condition" : {
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},
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"type" : "jdk.internal.classfile.impl.Util$Writable[]"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.util.internal.Accessor"
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},
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"type" : "org.apache.avro.Schema$Field"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.util.internal.Accessor"
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},
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"type" : "org.apache.avro.io.parsing.ResolvingGrammarGenerator"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.reflect.ReflectData"
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"name" : "c"
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},
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{
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"name" : "s"
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"name" : "d"
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},
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{
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"name" : "i"
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"name" : "f"
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},
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{
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"name" : "l"
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"name" : "i"
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},
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{
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"name" : "f"
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"name" : "i2"
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},
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{
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"name" : "d"
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"name" : "l"
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},
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{
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"name" : "o"
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},
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{
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"name" : "i2"
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"name" : "s"
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}
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]
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.reflect.ReflectionUtil$AccessorTestClass"
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},
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"type" : "org.apache.avro.reflect.ReflectionUtil$AccessorTestClass"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.Schema"
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},
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"type" : "sun.util.resources.cldr.CalendarData"
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"type" : "org.apache.avro.reflect.ReflectionUtil$AccessorTestClass",
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"fields" : [
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{
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"name" : "b"
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},
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{
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"name" : "by"
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{
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"name" : "c"
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{
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"name" : "d"
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},
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{
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"name" : "f"
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{
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"name" : "i"
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{
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"name" : "i2"
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{
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{
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"name" : "o"
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{
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"name" : "s"
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]
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.reflect.ReflectionUtil"
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"typeReached" : "org.apache.avro.util.springframework.ConcurrentReferenceHashMap"
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},
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"type" : {
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"lambda" : {
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"declaringClass" : "org.apache.avro.reflect.ReflectionUtil",
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"declaringMethod" : {
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"name" : "getConstructorAsFunction",
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"parameterTypes" : [
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"java.lang.Class",
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"java.lang.Class"
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]
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},
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"interfaces" : [
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"java.util.function.Function"
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]
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}
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}
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"type" : "org.apache.avro.util.springframework.ConcurrentReferenceHashMap$Segment[]"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.reflect.ReflectionUtil"
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"typeReached" : "org.apache.avro.Schema"
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},
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"type" : {
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"lambda" : {
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"declaringClass" : "org.apache.avro.reflect.ReflectionUtil",
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"declaringMethod" : {
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"name" : "getConstructorAsSupplier",
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"parameterTypes" : [
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"java.lang.Class"
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]
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},
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"interfaces" : [
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"java.util.function.Supplier"
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]
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}
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}
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"type" : "sun.util.resources.cldr.CalendarData"
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},
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{
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"condition" : {
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"org.apache.avro.reflect.AvroEncode"
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]
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}
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},
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{
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"type" : {
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"lambda" : {
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"declaringMethod" : {
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"name" : "getConstructorAsFunction",
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"parameterTypes" : [
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"java.lang.Class",
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"java.lang.Class"
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]
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},
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"interfaces" : [
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"java.util.function.Function"
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]
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}
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}
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},
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{
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"type" : {
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"lambda" : {
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"declaringClass" : "org.apache.avro.reflect.ReflectionUtil",
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"declaringMethod" : {
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"name" : "getConstructorAsSupplier",
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"parameterTypes" : [
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"java.lang.Class"
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]
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},
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"interfaces" : [
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"java.util.function.Supplier"
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]
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}
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}
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}
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],
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"resources" : [
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{
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"glob" : "DUMP_LAMBDA_PROXY_CLASS_FILES/org/apache/avro/reflect/ReflectionUtil$$Lambda.*.class"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.reflect.ReflectionUtil"
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"typeReached" : "org.apache.avro.generic.GenericData"
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},
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"glob" : "DUMP_LAMBDA_PROXY_CLASS_FILES/org/apache/avro/reflect/ReflectionUtil$$Lambda.0x000000009822cd08.class"
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"glob" : "META-INF/services/org.apache.avro.Conversion"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.reflect.ReflectionUtil"
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"typeReached" : "org.apache.avro.LogicalTypes"
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},
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"glob" : "DUMP_LAMBDA_PROXY_CLASS_FILES/org/apache/avro/reflect/ReflectionUtil$$Lambda.0x0000000098252e28.class"
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"glob" : "META-INF/services/org.apache.avro.LogicalTypes$LogicalTypeFactory"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.reflect.ReflectionUtil"
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"typeReached" : "org.apache.avro.Schema"
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},
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"glob" : "META-INF/services/org.slf4j.spi.SLF4JServiceProvider"
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},
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{
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"condition" : {
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"typeReached" : "org.apache.avro.Schema"
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},
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"glob" : "DUMP_LAMBDA_PROXY_CLASS_FILES/org/apache/avro/reflect/ReflectionUtil$$Lambda.0x0000000098253050.class"
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"glob" : "org/slf4j/impl/StaticLoggerBinder.class"
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}
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]
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}

‎stats/org.apache.avro/avro/1.12.1/execution-metrics.json‎

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"test_file": "tests/src/org.apache.avro/avro/1.12.1/src/test/java/org_apache_avro/avro/SpecificDataTest.java",
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"metadata_file": "metadata/org.apache.avro/avro/1.12.1/reachability-metadata.json"
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}
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},
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"improve_library_coverage:2026-06-24": {
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"timestamp": "2026-06-24T11:28:55.524210Z",
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"library": "org.apache.avro:avro:1.12.1",
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"starting_commit": "2db46a4efaa98005e6586e8df2f937d1a4e8d4f6",
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"ending_commit": "070cc4f73e94fff4435625fee62c490a1dc5227f",
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"strategy_name": "dynamic_access_main_sources_pi_gpt-5.5",
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"agent": "pi",
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"model": "oca/gpt-5.5",
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"status": "success_with_intervention",
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"stats": {
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"version": "1.12.1",
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"dynamicAccess": {
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"breakdown": {
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"reflection": {
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"coverageRatio": 0.926829,
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"coveredCalls": 38,
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"totalCalls": 41
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}
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},
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"coverageRatio": 0.926829,
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"coveredCalls": 38,
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"totalCalls": 41
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},
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"libraryCoverage": {
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"instruction": {
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"covered": 9184,
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"missed": 43877,
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},
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"line": {
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"total": 11654
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},
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"method": {
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"covered": 578,
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"ratio": 0.207094,
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"total": 2791
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}
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}
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},
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"library_preparation_preflight": {
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"status": "completed",
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"action": "advisory_preparation",
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"issue_number": 8565,
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"issue_label": "library-update-request",
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"library": "org.apache.avro:avro:1.12.1",
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"summary": "No extra dependency or Docker service is required for normal Avro schema, generic, specific, and reflect usage, but meaningful native coverage of Avro reflection constructor paths needs a JDK LambdaMetafactory dump property.",
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"deterministic_setup": [],
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"agent_guidance": "If generated tests exercise org.apache.avro.reflect.ReflectionUtil, ReflectData, or constructor-backed specific/reflect records, configure the test JVM with -Djdk.invoke.LambdaMetafactory.dumpProxyClassFiles=true and use a stable writable working directory so the native-image agent can observe the dumped lambda proxy class resources.",
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"risks": [
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"Avro's snappy, xz, and zstandard codecs depend on optional artifacts; avoid tests for those codecs unless explicit optional dependencies are later added.",
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"Dumped lambda proxy class resource names can vary by JDK/GraalVM version, so Gradle and Native Image verification remain authoritative."
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],
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"applied_setup": [],
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"input_evidence": [
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{
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"name": "issue",
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"summary": "#8565 Update existing library: org.apache.avro:avro:1.12.1; label=library-update-request; body_chars=150"
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},
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{
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"name": "existing_tests",
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"summary": "14 existing test file path(s) included"
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}
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],
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"model": "oca/gpt-5.5",
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"input_tokens_used": 60020,
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"output_tokens_used": 3971,
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"prompt_path": "library-preflight-prompt.txt",
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"raw_response_path": "library-preflight-response.txt",
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"session_log_path": "/home/mihailo/git/graalvm-reachability-metadata/forge/logs/org.apache.avro:avro:1.12.1/library-preparation-preflight/pi-generation-2026-06-24T10-13-01-561756Z.log"
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},
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"metrics": {
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"input_tokens_used": 84402,
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"cached_input_tokens_used": 496640,
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"output_tokens_used": 6662,
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"iterations": 2,
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"cost_usd": 0.4482,
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"generated_loc": 565,
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"metadata_entries": 61,
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"test_only_metadata_entries": 53,
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"code_coverage_percent": 18.25
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},
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"artifacts": {
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"test_file": "tests/src/org.apache.avro/avro/1.12.1/src/test/java/org_apache_avro/avro/ReflectDatumReaderTest.java",
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"metadata_file": "metadata/org.apache.avro/avro/1.12.1/reachability-metadata.json"
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}
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}
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}

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