[
https://issues.apache.org/jira/browse/HDFS-11738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16124428#comment-16124428
]
John Zhuge edited comment on HDFS-11738 at 8/12/17 3:37 AM:
------------------------------------------------------------
[~vinayrpet] HDFS-11303 has been committed.
was (Author: jzhuge):
[~vinayrpet] Committed HDFS-11303.
> Hedged pread takes more time when block moved from initial locations
> --------------------------------------------------------------------
>
> Key: HDFS-11738
> URL: https://issues.apache.org/jira/browse/HDFS-11738
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Attachments: HDFS-11738-01.patch, HDFS-11738-02.patch
>
>
> Scenario :
> Same as HDFS-11708.
> During Hedge read,
> 1. First two locations fails to read the data in hedged mode.
> 2. chooseData refetches locations and adds a future to read from DN3.
> 3. after adding future to DN3, main thread goes for refetching locations in
> loop and stucks there till all 3 retries to fetch locations exhausted, which
> consumes ~20 seconds with exponential retry time.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
