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https://issues.apache.org/jira/browse/HDFS-4657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13624004#comment-13624004
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Todd Lipcon commented on HDFS-4657:
-----------------------------------
I agree something like #3 makes sense. Let's just put a limit on the number of
blocks logged in any BR (something like 1000 or even 10000).
> If incremental BR is received before first full BR NN will log a line for
> every block on a DN
> ---------------------------------------------------------------------------------------------
>
> Key: HDFS-4657
> URL: https://issues.apache.org/jira/browse/HDFS-4657
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.0.4-alpha
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
>
> This can impact restart times pretty substantially if the DNs have a lot of
> blocks, and since the FSNS write lock is held while processing the block
> report clients will not make any progress.
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