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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-12613) Native EC coder should implement release() as idempotent function.
Date Tue, 10 Oct 2017 00:12:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16197911#comment-16197911
] 

Lei (Eddy) Xu edited comment on HDFS-12613 at 10/10/17 12:11 AM:
-----------------------------------------------------------------

This patch resets encoder / decoder to {{NULL}} after releases(). And it also checks whether
it is NULL in {{encode() / decode()}}, and throw {{IOE}} if it runs on a closed / NULL coder.


was (Author: eddyxu):
This patch resets encoder / decoder to {{NULL}} after releases(). And it also checks whether
it is NULL in {{encode() / decode() }}, and throw {{IOE}} if it runs on a closed / NULL object.

> Native EC coder should implement release() as idempotent function.
> ------------------------------------------------------------------
>
>                 Key: HDFS-12613
>                 URL: https://issues.apache.org/jira/browse/HDFS-12613
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: erasure-coding
>    Affects Versions: 3.0.0-beta1
>            Reporter: Lei (Eddy) Xu
>            Assignee: Lei (Eddy) Xu
>         Attachments: HDFS-12613.00.patch
>
>
> Recently, we found native EC coder crashes JVM because {{NativeRSDecoder#release()}}
being called multiple times (HDFS-12612 and HDFS-12606). 
> We should strength the implement the native code to make {{release()}} idempotent  as
well.



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