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Posted to issues@hbase.apache.org by "Ming Ma (JIRA)" <ji...@apache.org> on 2011/08/12 21:16:28 UTC

[jira] [Assigned] (HBASE-4196) TableRecordReader may skip first row of region

     [ https://issues.apache.org/jira/browse/HBASE-4196?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ming Ma reassigned HBASE-4196:
------------------------------

    Assignee: Ming Ma

> TableRecordReader may skip first row of region
> ----------------------------------------------
>
>                 Key: HBASE-4196
>                 URL: https://issues.apache.org/jira/browse/HBASE-4196
>             Project: HBase
>          Issue Type: Bug
>          Components: mapreduce
>    Affects Versions: 0.90.4
>            Reporter: Jan Lukavsky
>            Assignee: Ming Ma
>
> After the following scenario, the first record of region is skipped, without being sent to Mapper:
>  - the reader is initialized with TableRecordReader.init()
>  - then nextKeyValue is called, causing call to scanner.next() - here ScannerTimeoutException occurs
>  - the scanner is restarted by call to restart() and then *two* calls to scanner.next() occur, causing we have lost the first row

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