Merge pull request #54 from vintmd/master

add the 503 mpu retry, support get client from native store and fix t…

Author: vintmd

deploy.sh

@@ -21,7 +21,7 @@ do
           # 外部maven 中央仓库
           deploy_repository_id="oss"
           deploy_repository_url="https://oss.sonatype.org/service/local/staging/deploy/maven2"
-        elif ["$OPT" = "$INTER" ]; then
+        elif [ "$OPT" = "$INTER" ]; then
           deploy_repository_id="cos-inner-maven-repository"
           deploy_repository_url="http://mirrors.tencent.com/repository/maven/QCLOUD_COS"
         fi

src/main/java/org/apache/hadoop/fs/CosNativeFileSystemStore.java

@@ -1437,17 +1437,15 @@ private <X> Object callCOSClientWithRetry(X request) throws CosServiceException,
                 String errorCode = cse.getErrorCode();
                 LOG.debug("fail to retry statusCode {}, errorCode {}", statusCode, errorCode);
                 // 对5xx错误进行重试
-                if (request instanceof CopyObjectRequest && statusCode / 100 == 2
-                        && errorCode != null && !errorCode.isEmpty()) {
+                if (request instanceof CopyObjectRequest && hasErrorCode(statusCode, errorCode)) {
                     if (retryIndex <= this.maxRetryTimes) {
                         LOG.info(errMsg, cse);
                         ++retryIndex;
                     } else {
                         LOG.error(errMsg, cse);
                         throw new IOException(errMsg);
                     }
-                } else if (request instanceof  CompleteMultipartUploadRequest && statusCode / 100 ==2
-                        && errorCode != null && !errorCode.isEmpty()) {
+                } else if (request instanceof  CompleteMultipartUploadRequest && hasErrorCode(statusCode, errorCode)) {
                     // complete mpu error code might be in body when status code is 200
                     // double check to head object only works in big data job case which key is not same.
                     String key = ((CompleteMultipartUploadRequest) request).getKey();
@@ -1507,6 +1505,21 @@ private <X> Object callCOSClientWithRetry(X request) throws CosServiceException,
                                     throw cse;
                                 }
                             }
+
+                            // mpu might occur 503 access time out but already completed,
+                            // if direct retry may occur 403 not found the upload id.
+                            if (request instanceof CompleteMultipartUploadRequest && statusCode == 503) {
+                                String key = ((CompleteMultipartUploadRequest) request).getKey();
+                                FileMetadata fileMetadata = this.queryObjectMetadata(key);
+                                if (null != fileMetadata) {
+                                    // if file exist direct return.
+                                    LOG.info("complete mpu error might access time out, " +
+                                                    "but key {} already exist, length {}",
+                                            key, fileMetadata.getLength());
+                                    return new CompleteMultipartUploadResult();
+                                }
+                            }
+
                             Thread.sleep(
                                     ThreadLocalRandom.current().nextLong(sleepLeast, sleepBound));
                             ++retryIndex;
@@ -1529,6 +1542,15 @@ private <X> Object callCOSClientWithRetry(X request) throws CosServiceException,
     private static String ensureValidAttributeName(String attributeName) {
         return attributeName.replace('.', '-').toLowerCase();
     }
+
+    private boolean hasErrorCode(int statusCode, String errCode) {
+        return statusCode / 100 == 2 && errCode != null && !errCode.isEmpty();
+    }
+
+    public COSClient getCOSClient(){
+        return this.cosClient;
+    }
+
     private String getPluginVersionInfo() {
         Properties versionProperties = new Properties();
         InputStream inputStream= null;

src/main/java/org/apache/hadoop/fs/NativeFileSystemStore.java

@@ -6,6 +6,7 @@
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
+import com.qcloud.cos.COSClient;
 
 import java.io.File;
 import java.io.IOException;
@@ -24,6 +25,9 @@ public interface NativeFileSystemStore {
 
     void initialize(URI uri, Configuration conf) throws IOException;
 
+    // must init first
+    COSClient getCOSClient();
+
     HeadBucketResult headBucket(String bucketName) throws IOException;
 
     void storeFile(String key, File file, byte[] md5Hash) throws IOException;