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https://issues.apache.org/jira/browse/HDFS-12255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16113099#comment-16113099
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Anu Engineer commented on HDFS-12255:
-------------------------------------
Thanks for filing this, if you are not working on this, feel free to assign
this issue to me.
> Block Storage: Cblock should generated unique trace ID for the ops
> ------------------------------------------------------------------
>
> Key: HDFS-12255
> URL: https://issues.apache.org/jira/browse/HDFS-12255
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Affects Versions: HDFS-7240
> Reporter: Mukul Kumar Singh
> Assignee: Mukul Kumar Singh
> Fix For: HDFS-7240
>
>
> Cblock tests fails because cblock does not generate unique trace id for each
> op.
> {code}
> java.lang.AssertionError: expected:<0> but was:<1051>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:743)
> at org.junit.Assert.assertEquals(Assert.java:118)
> at org.junit.Assert.assertEquals(Assert.java:555)
> at org.junit.Assert.assertEquals(Assert.java:542)
> at
> org.apache.hadoop.cblock.TestBufferManager.testRepeatedBlockWrites(TestBufferManager.java:448)
> {code}
> This failure is because of following error.
> {code}
> 017-08-02 17:50:34,569 [Cache Block Writer Thread #4] ERROR
> scm.XceiverClientHandler (XceiverClientHandler.java:sendCommandAsync(134)) -
> Command with Trace already exists. Ignoring this command. . Previous Command:
> java.util.concurrent.CompletableFuture@7847fc2d[Not completed, 1 dependents]
> 2017-08-02 17:50:34,569 [Cache Block Writer Thread #4] ERROR
> jscsiHelper.ContainerCacheFlusher (BlockWriterTask.java:run(108)) - Writing
> of block:44 failed, We have attempted to write this block 7 tim
> es to the container container2483304118.Trace ID:
> java.lang.IllegalStateException: Duplicate trace ID. Command with this trace
> ID is already executing. Please ensure that trace IDs are not reused. ID:
> at
> org.apache.hadoop.scm.XceiverClientHandler.sendCommandAsync(XceiverClientHandler.java:139)
> at
> org.apache.hadoop.scm.XceiverClientHandler.sendCommand(XceiverClientHandler.java:114)
> at
> org.apache.hadoop.scm.XceiverClient.sendCommand(XceiverClient.java:132)
> at
> org.apache.hadoop.scm.storage.ContainerProtocolCalls.writeSmallFile(ContainerProtocolCalls.java:225)
> at
> org.apache.hadoop.cblock.jscsiHelper.BlockWriterTask.run(BlockWriterTask.java:97)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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