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From "Yu Sun (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HBASE-15325) ResultScanner allowing partial result will miss the rest of the row if the region is moved between two rpc requests
Date Fri, 18 Mar 2016 08:15:33 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yu Sun reassigned HBASE-15325:
------------------------------

    Assignee: Yu Sun  (was: Phil Yang)

> ResultScanner allowing partial result will miss the rest of the row if the region is
moved between two rpc requests
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-15325
>                 URL: https://issues.apache.org/jira/browse/HBASE-15325
>             Project: HBase
>          Issue Type: Bug
>          Components: dataloss, Scanners
>    Affects Versions: 1.2.0, 1.1.3
>            Reporter: Phil Yang
>            Assignee: Yu Sun
>            Priority: Critical
>             Fix For: 2.0.0, 1.3.0, 1.2.1, 1.1.4, 1.4.0
>
>         Attachments: 15325-test.txt, HBASE-15325-v1.txt, HBASE-15325-v10.patch, HBASE-15325-v11.patch,
HBASE-15325-v2.txt, HBASE-15325-v3.txt, HBASE-15325-v5.txt, HBASE-15325-v6.1.txt, HBASE-15325-v6.2.txt,
HBASE-15325-v6.3.txt, HBASE-15325-v6.4.txt, HBASE-15325-v6.5.txt, HBASE-15325-v6.txt, HBASE-15325-v7.patch,
HBASE-15325-v8.patch, HBASE-15325-v9.patch
>
>
> HBASE-11544 allow scan rpc return partial of a row to reduce memory usage for one rpc
request. And client can setAllowPartial or setBatch to get several cells in a row instead
of the whole row.
> However, the status of the scanner is saved on server and we need this to get the next
part if there is a partial result before. If we move the region to another RS, client will
get a NotServingRegionException and open a new scanner to the new RS which will be regarded
as a new scan from the end of this row. So the rest cells of the row of last result will be
missing.



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