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Ayush Saxena commented on HDFS-13179: ------------------------------------- branch-3.0 is EOL? https://cwiki.apache.org/confluence/display/HADOOP/EOL+%28End-of-life%29+Release+Branches There doesn't seems to be any need to push to branch-3.0 then? > TestLazyPersistReplicaRecovery#testDnRestartWithSavedReplicas fails > intermittently > ---------------------------------------------------------------------------------- > > Key: HDFS-13179 > URL: https://issues.apache.org/jira/browse/HDFS-13179 > Project: Hadoop HDFS > Issue Type: Bug > Components: fs > Affects Versions: 3.0.0 > Reporter: Gabor Bota > Assignee: Ahmed Hussein > Priority: Critical > Fix For: 3.0.4, 3.3.0, 3.1.4, 3.2.2, 2.10.1 > > Attachments: HDFS-13179-branch-2.10.003.patch, HDFS-13179.001.patch, > HDFS-13179.002.patch, HDFS-13179.003.patch, test runs.zip > > > The error caused by TimeoutException because the test is waiting to ensure > that the file is replicated to DISK storage but the replication can't be > finished to DISK during the 30s timeout in ensureFileReplicasOnStorageType(), > but the file is still on RAM_DISK - so there is no data loss. > Adding the following to TestLazyPersistReplicaRecovery.java:56 essentially > fixes the flakiness. > {code:java} > try { > ensureFileReplicasOnStorageType(path1, DEFAULT); > }catch (TimeoutException t){ > LOG.warn("We got \"" + t.getMessage() + "\" so trying to find data on > RAM_DISK"); > ensureFileReplicasOnStorageType(path1, RAM_DISK); > } > } > {code} > Some thoughts: > * Successful and failed tests run similar to the point when datanode > restarts. Restart line is the following in the log: LazyPersistTestCase - > Restarting the DataNode > * There is a line which only occurs in the failed test: *addStoredBlock: > Redundant addStoredBlock request received for blk_1073741825_1001 on node > 127.0.0.1:49455 size 5242880* > * This redundant request at BlockManager#addStoredBlock could be the main > reason for the test fail. Something wrong with the gen stamp? Corrupt > replicas? > ============================= > Current fail ratio based on my test of TestLazyPersistReplicaRecovery: > 1000 runs, 34 failures (3.4% fail) > Failure rate analysis: > TestLazyPersistReplicaRecovery.testDnRestartWithSavedReplicas: 3.4% > 33 failures caused by: {noformat} > java.util.concurrent.TimeoutException: Timed out waiting for condition. > Thread diagnostics: Timestamp: 2018-01-05 11:50:34,964 "IPC Server handler 6 > on 39589" > {noformat} > 1 failure caused by: {noformat} > java.net.BindException: Problem binding to [localhost:56729] > java.net.BindException: Address already in use; For more details see: > http://wiki.apache.org/hadoop/BindException at > org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestLazyPersistReplicaRecovery.testDnRestartWithSavedReplicas(TestLazyPersistReplicaRecovery.java:49) > Caused by: java.net.BindException: Address already in use at > org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestLazyPersistReplicaRecovery.testDnRestartWithSavedReplicas(TestLazyPersistReplicaRecovery.java:49) > {noformat} > ============================= > Example stacktrace: > {noformat} > Timed out waiting for condition. Thread diagnostics: > Timestamp: 2017-11-01 10:36:49,499 > "Thread-1" prio=5 tid=13 runnable > java.lang.Thread.State: RUNNABLE > at java.lang.Thread.dumpThreads(Native Method) > at java.lang.Thread.getAllStackTraces(Thread.java:1610) > at > org.apache.hadoop.test.TimedOutTestsListener.buildThreadDump(TimedOutTestsListener.java:87) > at > org.apache.hadoop.test.TimedOutTestsListener.buildThreadDiagnosticString(TimedOutTestsListener.java:73) > at org.apache.hadoop.test.GenericTestUtils.waitFor(GenericTestUtils.java:369) > at > org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.LazyPersistTestCase.ensureFileReplicasOnStorageType(LazyPersistTestCase.java:140) > at > org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestLazyPersistReplicaRecovery.testDnRestartWithSavedReplicas(TestLazyPersistReplicaRecovery.java:54) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > ... > {noformat} -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org