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https://issues.apache.org/jira/browse/HDFS-10333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15284405#comment-15284405
]
Yiqun Lin commented on HDFS-10333:
----------------------------------
Thanks [~andrew.wang] for commit!
> Intermittent org.apache.hadoop.hdfs.TestFileAppend failure in trunk
> -------------------------------------------------------------------
>
> Key: HDFS-10333
> URL: https://issues.apache.org/jira/browse/HDFS-10333
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
> Reporter: Yongjun Zhang
> Assignee: Yiqun Lin
> Fix For: 2.8.0
>
> Attachments: HDFS-10333.001.patch
>
>
> Java8 (I used JAVA_HOME=/opt/toolchain/jdk1.8.0_25):
> {code}
> ------------------------------------------------------
> T E S T S
> -------------------------------------------------------
> Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=768m;
> support was removed in 8.0
> Running org.apache.hadoop.hdfs.TestFileAppend
> Tests run: 12, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 27.75 sec
> <<< FAILURE! - in org.apache.hadoop.hdfs.TestFileAppend
> testMultipleAppends(org.apache.hadoop.hdfs.TestFileAppend) Time elapsed:
> 3.674 sec <<< ERROR!
> java.io.IOException: Failed to replace a bad datanode on the existing
> pipeline due to no more good datanodes being available to try. (Nodes:
> current=[DatanodeInfoWithStorage[127.0.0.1:43067,DS-cf80da41-3697-4afa-8f89-93693cd5035d,DISK],
>
> DatanodeInfoWithStorage[127.0.0.1:32946,DS-3b08422c-959e-42f0-a624-91b2524c4371,DISK]],
>
> original=[DatanodeInfoWithStorage[127.0.0.1:43067,DS-cf80da41-3697-4afa-8f89-93693cd5035d,DISK],
>
> DatanodeInfoWithStorage[127.0.0.1:32946,DS-3b08422c-959e-42f0-a624-91b2524c4371,DISK]]).
> The current failed datanode replacement policy is DEFAULT, and a client may
> configure this via
> 'dfs.client.block.write.replace-datanode-on-failure.policy' in its
> configuration.
> at
> org.apache.hadoop.hdfs.DataStreamer.findNewDatanode(DataStreamer.java:1166)
> at
> org.apache.hadoop.hdfs.DataStreamer.addDatanode2ExistingPipeline(DataStreamer.java:1232)
> at
> org.apache.hadoop.hdfs.DataStreamer.handleDatanodeReplacement(DataStreamer.java:1423)
> at
> org.apache.hadoop.hdfs.DataStreamer.setupPipelineInternal(DataStreamer.java:1338)
> at
> org.apache.hadoop.hdfs.DataStreamer.setupPipelineForAppendOrRecovery(DataStreamer.java:1321)
> at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:599)
> {code}
> However, when I run with Java1.7, the test is sometimes successful, and it
> sometimes fails with
> {code}
> Tests run: 12, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 41.32 sec
> <<< FAILURE! - in org.apache.hadoop.hdfs.TestFileAppend
> testMultipleAppends(org.apache.hadoop.hdfs.TestFileAppend) Time elapsed:
> 9.099 sec <<< ERROR!
> java.io.IOException: Failed to replace a bad datanode on the existing
> pipeline due to no more good datanodes being available to try. (Nodes:
> current=[DatanodeInfoWithStorage[127.0.0.1:49006,DS-498240fa-d1c7-4ba1-b97e-a1761cbbefa5,DISK],
>
> DatanodeInfoWithStorage[127.0.0.1:43097,DS-b83b49ce-fc14-4b9e-a3fc-7df2cd9fc753,DISK]],
>
> original=[DatanodeInfoWithStorage[127.0.0.1:49006,DS-498240fa-d1c7-4ba1-b97e-a1761cbbefa5,DISK],
>
> DatanodeInfoWithStorage[127.0.0.1:43097,DS-b83b49ce-fc14-4b9e-a3fc-7df2cd9fc753,DISK]]).
> The current failed datanode replacement policy is DEFAULT, and a client may
> configure this via
> 'dfs.client.block.write.replace-datanode-on-failure.policy' in its
> configuration.
> at
> org.apache.hadoop.hdfs.DataStreamer.findNewDatanode(DataStreamer.java:1162)
> at
> org.apache.hadoop.hdfs.DataStreamer.addDatanode2ExistingPipeline(DataStreamer.java:1232)
> at
> org.apache.hadoop.hdfs.DataStreamer.handleDatanodeReplacement(DataStreamer.java:1423)
> at
> org.apache.hadoop.hdfs.DataStreamer.setupPipelineInternal(DataStreamer.java:1338)
> at
> org.apache.hadoop.hdfs.DataStreamer.setupPipelineForAppendOrRecovery(DataStreamer.java:1321)
> at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:599)
> {code}
> The failure of this test is intermittent, but it fails pretty often.
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