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https://issues.apache.org/jira/browse/HDFS-4265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14064971#comment-14064971
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Rakesh R commented on HDFS-4265:
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Thanks [~ikelly].
I have exposed 'readEntryTimeoutSec' configuration in BKJM inorder to set to a
high value in BookKeeper client. By default its configured as 5 seconds which
is same as BookKeeper's 'readEntryTimeoutSec' default value.
> BKJM doesn't take advantage of speculative reads
> ------------------------------------------------
>
> Key: HDFS-4265
> URL: https://issues.apache.org/jira/browse/HDFS-4265
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha
> Affects Versions: 2.2.0
> Reporter: Ivan Kelly
> Assignee: Rakesh R
> Attachments: 001-HDFS-4265.patch, 002-HDFS-4265.patch,
> 003-HDFS-4265.patch, 004-HDFS-4265.patch
>
>
> BookKeeperEditLogInputStream reads entry at a time, so it doesn't take
> advantage of the speculative read mechanism introduced by BOOKKEEPER-336.
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