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https://issues.apache.org/jira/browse/HDFS-9535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15049755#comment-15049755
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Jing Zhao commented on HDFS-9535:
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The failure is because:
# In HDFS-1172 we update the pending replication queue if a block has minimum
required number of replicas but the NN has not received block-received report
from some DN
# The test writes two blocks into a file. For the first block, it is possible
that NN receives 0 block-received msg from DN but still commit the block when
the client tries to get the next block. In that case we will add the block into
under-replicated queue instead of the pending queue, and block recovery will
happen in the cluster.
# This usually will not happen when closing the file since the client will
retry the completeFile call until the minimum replication is satisfied. Thus a
simple fix can be changing the file length to 1 block.
> Fix TestReplication#testNoExtraReplicationWhenBlockReceivedIsLate
> -----------------------------------------------------------------
>
> Key: HDFS-9535
> URL: https://issues.apache.org/jira/browse/HDFS-9535
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.8.0
> Reporter: Jing Zhao
> Priority: Minor
>
> TestReplication#testNoExtraReplicationWhenBlockReceivedIsLate failed in
> several Jenkins run (e.g.,
> https://builds.apache.org/job/PreCommit-HDFS-Build/13818/testReport/). The
> failure is on the last {{assertNoReplicationWasPerformed}} check.
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