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Posted to hdfs-issues@hadoop.apache.org by "Kai Sasaki (JIRA)" <ji...@apache.org> on 2015/11/06 11:13:27 UTC

[jira] [Assigned] (HDFS-8287) DFSStripedOutputStream.writeChunk should not wait for writing parity

     [ https://issues.apache.org/jira/browse/HDFS-8287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kai Sasaki reassigned HDFS-8287:
--------------------------------

    Assignee: Kai Sasaki  (was: Kai Sasaki)

> DFSStripedOutputStream.writeChunk should not wait for writing parity 
> ---------------------------------------------------------------------
>
>                 Key: HDFS-8287
>                 URL: https://issues.apache.org/jira/browse/HDFS-8287
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs-client
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Kai Sasaki
>         Attachments: HDFS-8287-HDFS-7285.00.patch, HDFS-8287-HDFS-7285.01.patch, HDFS-8287-HDFS-7285.02.patch, HDFS-8287-HDFS-7285.03.patch, HDFS-8287-HDFS-7285.04.patch, HDFS-8287-HDFS-7285.05.patch, HDFS-8287-HDFS-7285.06.patch, HDFS-8287-HDFS-7285.07.patch, HDFS-8287-HDFS-7285.08.patch, HDFS-8287-HDFS-7285.09.patch, HDFS-8287-HDFS-7285.10.patch, HDFS-8287-HDFS-7285.11.patch, HDFS-8287-HDFS-7285.WIP.patch, HDFS-8287-performance-report.pdf, HDFS-8287.12.patch, HDFS-8287.13.patch, HDFS-8287.14.patch, HDFS-8287.15.patch, h8287_20150911.patch, jstack-dump.txt
>
>
> When a stripping cell is full, writeChunk computes and generates parity packets.  It sequentially calls waitAndQueuePacket so that user client cannot continue to write data until it finishes.
> We should allow user client to continue writing instead but not blocking it when writing parity.



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