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Posted to issues@hbase.apache.org by "Enis Soztutar (JIRA)" <ji...@apache.org> on 2016/07/07 18:12:11 UTC

[jira] [Commented] (HBASE-11240) Print hdfs pipeline when hlog's sync is slow

    [ https://issues.apache.org/jira/browse/HBASE-11240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15366529#comment-15366529 ] 

Enis Soztutar commented on HBASE-11240:
---------------------------------------

[~chia7712] why did you assign this to yourself?

> Print hdfs pipeline when hlog's sync is slow
> --------------------------------------------
>
>                 Key: HBASE-11240
>                 URL: https://issues.apache.org/jira/browse/HBASE-11240
>             Project: HBase
>          Issue Type: Improvement
>          Components: Operability, wal
>            Reporter: Liu Shaohui
>            Assignee: ChiaPing Tsai
>             Fix For: 0.99.0, 2.0.0
>
>         Attachments: HBASE-11240-addendum.diff, HBASE-11240-trunk-v1.diff, HBASE-11240-trunk-v2.diff
>
>
> Sometimes the slow sync of hlog writer is because there is an abnormal datanode in the pipeline. So it will be helpful to print the pipeline of slow sync to diagnose those problems.
> The ultimate solution is to join the trace of HBase and HDFS.



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