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https://issues.apache.org/jira/browse/HDFS-12116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Chen updated HDFS-12116:
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Target Version/s: 3.0.0 (was: 2.9.0)
> BlockReportTestBase#blockReport_08 and #blockReport_08 intermittently fail
> --------------------------------------------------------------------------
>
> Key: HDFS-12116
> URL: https://issues.apache.org/jira/browse/HDFS-12116
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Affects Versions: 0.22.0
> Reporter: Xiao Chen
> Assignee: Xiao Chen
> Attachments: HDFS-12116.01.patch, HDFS-12116.02.patch,
> HDFS-12116.03.patch,
> TEST-org.apache.hadoop.hdfs.server.datanode.TestNNHandlesBlockReportPerStorage.xml
>
>
> This seems to be long-standing, but the failure rate (~10%) is slightly
> higher in dist-test run in using cdh.
> In both _08 and _09 tests:
> # an attempt is made to make a replica in {{TEMPORARY}}
> state, by {{waitForTempReplica}}.
> # Once that's returned, the test goes on to verify block reports shows
> correct pending replication blocks.
> But there's a race condition. If the replica is replicated between steps #1
> and #2, {{getPendingReplicationBlocks}} could return 0 or 1, depending on how
> many replicas are replicated, hence failing the test.
> Failures are seen on both {{TestNNHandlesBlockReportPerStorage}} and
> {{TestNNHandlesCombinedBlockReport}}
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