Alert trigger condition accepts long values, but the underlying code can only handle integers

[kid4git]

I wanted to define a trigger condition that checks for free storage to be under 2 GiB which is 2147483648 bytes. The trigger though created error alerts like " Error: Failed evaluating trigger: ... ggregations.when.value < 2147483648 ^---- HERE" whereas my trigger with the 1 GiB condition (1073741824 bytes) worked fine.

Elasticsearch showed this error:
{"type": "server", "timestamp": "2021-02-11T05:40:11,996Z", "level": "INFO", "component": "c.a.o.a.MonitorRunner", "cluster.name": "docker-cluster", "node.name": "a2b866ffc78a", "message": "Error running script for monitor WCKXincBaPvy5iOM-xEB, trigger: eOd1jHcBhFIUwSF3Wqsb", "cluster.uuid": "9I8_HRIQQJOf_2cXGVqZuw", "node.id": "eNkdYkOrSZi5QeKWtI2oWQ" , "stacktrace": ["org.elasticsearch.script.ScriptException: compile error", "at org.elasticsearch.painless.PainlessScriptEngine.convertToScriptException(PainlessScriptEngine.java:506) ~[?:?]", "at org.elasticsearch.painless.PainlessScriptEngine.compile(PainlessScriptEngine.java:417) ~[?:?]", "at org.elasticsearch.painless.PainlessScriptEngine.compile(PainlessScriptEngine.java:145) ~[?:?]", "at org.elasticsearch.script.ScriptCache.lambda$compile$0(ScriptCache.java:110) ~[elasticsearch-7.10.1.jar:7.10.1]", "at org.elasticsearch.common.cache.Cache.computeIfAbsent(Cache.java:433) ~[elasticsearch-7.10.1.jar:7.10.1]", "at org.elasticsearch.script.ScriptCache.compile(ScriptCache.java:99) ~[elasticsearch-7.10.1.jar:7.10.1]", "at org.elasticsearch.script.ScriptService.compile(ScriptService.java:384) ~[elasticsearch-7.10.1.jar:7.10.1]", "at com.amazon.opendistroforelasticsearch.alerting.MonitorRunner.runTrigger(MonitorRunner.kt:405) [opendistro_alerting-1.12.0.2.jar:1.12.0.2]", "at com.amazon.opendistroforelasticsearch.alerting.MonitorRunner.runMonitor(MonitorRunner.kt:242) [opendistro_alerting-1.12.0.2.jar:1.12.0.2]", "at com.amazon.opendistroforelasticsearch.alerting.MonitorRunner$runMonitor$1.invokeSuspend(MonitorRunner.kt) [opendistro_alerting-1.12.0.2.jar:1.12.0.2]", "at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) [kotlin-stdlib-1.3.72.jar:1.3.72-release-468 (1.3.72)]", "at kotlinx.coroutines.DispatchedTask.run(Dispatched.kt:233) [kotlinx-coroutines-core-1.1.1.jar:?]", "at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:594) [kotlinx-coroutines-core-1.1.1.jar:?]", "at kotlinx.coroutines.scheduling.CoroutineScheduler.access$runSafely(CoroutineScheduler.kt:60) [kotlinx-coroutines-core-1.1.1.jar:?]", "at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:742) [kotlinx-coroutines-core-1.1.1.jar:?]", "Caused by: java.lang.IllegalArgumentException: Invalid int constant [2147483648]. If you want a long constant then change it to [2147483648L].", "at org.elasticsearch.painless.PainlessScript$Script.compile(return ctx.results[0].aggregations.when.value == null ? false : ctx.results[0].aggregations.when.value < 2147483648:106) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visitNumeric(DefaultSemanticAnalysisPhase.java:1925) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visitNumeric(DefaultSemanticAnalysisPhase.java:161) ~[?:?]", "at org.elasticsearch.painless.node.ENumeric.visit(ENumeric.java:52) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.checkedVisit(DefaultSemanticAnalysisPhase.java:196) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visitComp(DefaultSemanticAnalysisPhase.java:1274) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visitComp(DefaultSemanticAnalysisPhase.java:161) ~[?:?]", "at org.elasticsearch.painless.node.EComp.visit(EComp.java:59) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.checkedVisit(DefaultSemanticAnalysisPhase.java:196) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visitConditional(DefaultSemanticAnalysisPhase.java:1411) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visitConditional(DefaultSemanticAnalysisPhase.java:161) ~[?:?]", "at org.elasticsearch.painless.node.EConditional.visit(EConditional.java:58) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.checkedVisit(DefaultSemanticAnalysisPhase.java:196) ~[?:?]", "at org.elasticsearch.painless.phase.PainlessSemanticAnalysisPhase.visitReturn(PainlessSemanticAnalysisPhase.java:165) ~[?:?]", "at org.elasticsearch.painless.phase.PainlessSemanticAnalysisPhase.visitReturn(PainlessSemanticAnalysisPhase.java:52) ~[?:?]", "at org.elasticsearch.painless.node.SReturn.visit(SReturn.java:44) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visit(DefaultSemanticAnalysisPhase.java:185) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visitBlock(DefaultSemanticAnalysisPhase.java:304) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visitBlock(DefaultSemanticAnalysisPhase.java:161) ~[?:?]", "at org.elasticsearch.painless.node.SBlock.visit(SBlock.java:48) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visit(DefaultSemanticAnalysisPhase.java:185) ~[?:?]", "at org.elasticsearch.painless.phase.PainlessSemanticAnalysisPhase.visitFunction(PainlessSemanticAnalysisPhase.java:91) ~[?:?]", "at org.elasticsearch.painless.phase.DefaultSemanticAnalysisPhase.visitClass(DefaultSemanticAnalysisPhase.java:220) ~[?:?]", "at org.elasticsearch.painless.Compiler.compile(Compiler.java:222) ~[?:?]", "at org.elasticsearch.painless.PainlessScriptEngine$2.run(PainlessScriptEngine.java:412) ~[?:?]", "at org.elasticsearch.painless.PainlessScriptEngine$2.run(PainlessScriptEngine.java:408) ~[?:?]", "at java.security.AccessController.doPrivileged(AccessController.java:391) ~[?:?]", "at org.elasticsearch.painless.PainlessScriptEngine.compile(PainlessScriptEngine.java:408) ~[?:?]", "... 13 more"] }

Turns out that 2147483648 happens to be the first value that requires a long type. So I reduced my condition value by 1 to 2147483647 to make it an int and now it works.

The underlying code should check the size the required numeric type and correctly handle it.

This is opendistroAlertingKibana@1.12.0.2