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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8309) TableLockManager: allow lock timeout to be set at the individual lock level
Date Tue, 09 Apr 2013 22:56:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13627226#comment-13627226
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Ted Yu commented on HBASE-8309:
-------------------------------

bq. TableLockManager.java is marked Private. We can change its API.
For Private class, we can change its API / implementation. In this case, the change is to
add a parameter to writeLock().

>From TableLockManager, line 319:
{code}
     * @param writeLockTimeoutMs Timeout (in milliseconds) for acquiring a write lock for
a
     * given table, or -1 for no timeout
{code}
How about using -2 for default timeout ?
                
> TableLockManager: allow lock timeout to be set at the individual lock level
> ---------------------------------------------------------------------------
>
>                 Key: HBASE-8309
>                 URL: https://issues.apache.org/jira/browse/HBASE-8309
>             Project: HBase
>          Issue Type: Improvement
>          Components: master
>    Affects Versions: 0.95.0
>            Reporter: Jerry He
>            Assignee: Jerry He
>            Priority: Minor
>             Fix For: 0.98.0, 0.95.1, 0.95.2
>
>         Attachments: HBASE-8309.patch
>
>
> Currently the lock timeout values and defaults are set and shared at the TableLockManager
level.
> One TableLockManager is shared on the master. We should allow the lock timeout to be
set at individual lock level when we instantiate the lock. Components using the locks may
have different timeout preferences. 

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