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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8310) HBase snapshot timeout default values and TableLockManger timeout
Date Wed, 19 Jun 2013 04:31:21 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-8310:
-------------------------

    Fix Version/s:     (was: 0.94.9)
                       (was: 0.98.0)
                       (was: 0.95.2)

Moving out till we get updated patch.
                
> HBase snapshot timeout default values and TableLockManger timeout
> -----------------------------------------------------------------
>
>                 Key: HBASE-8310
>                 URL: https://issues.apache.org/jira/browse/HBASE-8310
>             Project: HBase
>          Issue Type: Bug
>          Components: snapshots
>    Affects Versions: 0.95.0
>            Reporter: Jerry He
>            Assignee: Jerry He
>            Priority: Minor
>         Attachments: trunk.patch
>
>
> There are a few timeout values and defaults being used by HBase snapshot.
> DEFAULT_MAX_WAIT_TIME (60000 milli sec, 1 min) for client response
> TIMEOUT_MILLIS_DEFAULT (60000 milli sec, 1 min) for Procedure timeout
> SNAPSHOT_TIMEOUT_MILLIS_DEFAULT (60000 milli sec, 1 min) for region server subprocedure
 
> There is also other timeout involved, for example, 
> DEFAULT_TABLE_WRITE_LOCK_TIMEOUT_MS (10 mins) for TakeSnapshotHandler#prepare()
> We could have this case:
> The user issues a sync snapshot request, waits for 1 min, and gets an exception.
> In the meantime the snapshot handler is blocked on the table lock, and the snapshot may
continue to finish after 10 mins.
> But the user will probably re-issue the snapshot request during the 10 mins.
> This is a little confusing and messy when this happens.
> To be more reasonable, we should either increase the DEFAULT_MAX_WAIT_TIME or decrease
the table lock waiting time.

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