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From "dhruba borthakur (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4528) The put operation can release the rowlock before sync-ing the Hlog
Date Sat, 22 Oct 2011 07:52:34 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

dhruba borthakur updated HBASE-4528:
------------------------------------

    Attachment: appendNoSyncPut7.txt

Addressed feedback comments from RamKrishna and Jonathan. Fixed unit test to not assert erroneously.
Enhanced Memstore.rollback() to rollback keys from memstore and snapshot.

                
> The put operation can release the rowlock before sync-ing the Hlog
> ------------------------------------------------------------------
>
>                 Key: HBASE-4528
>                 URL: https://issues.apache.org/jira/browse/HBASE-4528
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>             Fix For: 0.94.0
>
>         Attachments: appendNoSync5.txt, appendNoSyncPut1.txt, appendNoSyncPut2.txt, appendNoSyncPut3.txt,
appendNoSyncPut4.txt, appendNoSyncPut5.txt, appendNoSyncPut6.txt, appendNoSyncPut7.txt
>
>
> This allows for better throughput when there are hot rows. A single row update improves
from 100 puts/sec/server to 5000 puts/sec/server.

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