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From "Honghua Feng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-11200) AsyncWriter of FSHLog might throw ArrayIndexOutOfBoundsException
Date Mon, 19 May 2014 10:15:39 GMT

     [ https://issues.apache.org/jira/browse/HBASE-11200?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Honghua Feng updated HBASE-11200:
---------------------------------

    Status: Patch Available  (was: Open)

> AsyncWriter of FSHLog might throw ArrayIndexOutOfBoundsException
> ----------------------------------------------------------------
>
>                 Key: HBASE-11200
>                 URL: https://issues.apache.org/jira/browse/HBASE-11200
>             Project: HBase
>          Issue Type: Bug
>          Components: wal
>    Affects Versions: 0.98.2
>            Reporter: cuijianwei
>            Assignee: cuijianwei
>            Priority: Minor
>         Attachments: HBASE-11200-0.98.patch
>
>
> AsyncWriter of FSHLog might throw ArrayIndexOutOfBoundsException because of the following
code in AsyncWriter#run():
> {code}
>              }
>            }
>            if (!hasIdleSyncer) {
>             int idx = (int)this.lastWrittenTxid % asyncSyncers.length;
>              asyncSyncers[idx].setWrittenTxid(this.lastWrittenTxid);
>            }
>          }
> {code}
> In obove code, "this.lastWrittenTxid % asyncSyncers.length" might become negative when
this.lastWrittenTxid is bigger than Interger.MAX_VALUE where this.lastWrittenTxid  is a long.
The attachment gives a quick fix.



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