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From "Heng Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16664) Timeout logic in AsyncProcess is broken
Date Wed, 12 Oct 2016 02:04:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15567272#comment-15567272
] 

Heng Chen commented on HBASE-16664:
-----------------------------------



Now during multi requests,  we first split the requests by each RS,  and call them simultaneously
with multi threads. You extract TimeTracker into AsyncRequestFutureImpl and pass it into callable
during multi-request call, all of them share one TimeTracker?  I think operationTimeout is
meaningful for one operation NOT for multi operations and it seems has race condition for
TimeTracker with multi threads.

I know now in AP for multi-request (batch, put),  we recreate callable for each retry and
TimeTracker will be reset.  As original logical,  operationTimeout has only relationship with
single-request (We ignore it during batch and put and just use rpcTimeout), i think it is
reasonable because operationTimeout should only affect one operation NOT for batch operations.
 

wdyt? [~yangzhe1991] [~Apache9] [~stack] 

 

> Timeout logic in AsyncProcess is broken
> ---------------------------------------
>
>                 Key: HBASE-16664
>                 URL: https://issues.apache.org/jira/browse/HBASE-16664
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Phil Yang
>            Assignee: Phil Yang
>         Attachments: 1.patch, HBASE-16664-branch-1-v1.patch, HBASE-16664-branch-1-v1.patch,
HBASE-16664-branch-1.1-v1.patch, HBASE-16664-branch-1.2-v1.patch, HBASE-16664-branch-1.3-v1.patch,
HBASE-16664-v1.patch, HBASE-16664-v2.patch, HBASE-16664-v3.patch, HBASE-16664-v4.patch, HBASE-16664-v5.patch,
testhcm.patch
>
>
> Have not checked the root cause, but I think timeout of all operations in AsyncProcess
is broken



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