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https://issues.apache.org/jira/browse/HDFS-10810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15530236#comment-15530236
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Mingliang Liu commented on HDFS-10810:
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Thanks [~brahmareddy]. That's true that [HDFS-10666] has not addressed all the
places that use fixed time sleep for waiting. It is still an in-progress JIRA
and needs a lot of work. If you can file/work on new sub-tasks, I'm happy to
review. The intermittently failing ones are of high priority.
The change in the v3 patch is overall good. I'd like to confirm my thought is
correct - the last {{getUnderReplicatedBlocksCount()}} and
{{getMissingBlocksCount}} assertions are actually the final consistent state.
That is, the UnderReplicatedBlocksCount will always be 1 and MissingBlocksCount
always be 0 after they reach their respective values. If only there is a way to
test this.
> Setreplication removing block from underconstrcution temporarily when batch
> IBR is enabled.
> --------------------------------------------------------------------------------------------
>
> Key: HDFS-10810
> URL: https://issues.apache.org/jira/browse/HDFS-10810
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Brahma Reddy Battula
> Assignee: Brahma Reddy Battula
> Attachments: HDFS-10810-002.patch, HDFS-10810-003.patch,
> HDFS-10810.patch
>
>
> 1)Batch IBR is enabled with number of committed blocks allowed=1
> 2) Written one block and closed the file without waiting for IBR
> 3)Setreplication called immediately on the file.
> So till the finalized IBR Received, block will not be added to
> {{neededReconstruction}} since following check will be {{false}} as block is
> not marked as complete.
> {code}
> if (isNeededReconstruction(block, repl.liveReplicas())) {
> neededReconstruction.update(block, repl.liveReplicas(),
> repl.readOnlyReplicas(), repl.decommissionedAndDecommissioning(),
> curExpectedReplicas, curReplicasDelta, expectedReplicasDelta);
> }.{code}
> Hence block will not marked as under-replicated.
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