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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15325) ResultScanner allowing partial result will miss the rest of the row if the region is moved between two rpc requests
Date Wed, 02 Mar 2016 20:46:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15176454#comment-15176454
] 

Ted Yu commented on HBASE-15325:
--------------------------------

In the JDK 7 run:

Caused by: java.lang.RuntimeException: 
Error while running command to get file permissions : ExitCodeException exitCode=127: /bin/ls:
error while loading shared libraries: libdl.so.2: failed to map segment from shared object:
Permission denied

Environment may have something to do with test failures.

> 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
>    Affects Versions: 1.2.0, 1.1.3
>            Reporter: Phil Yang
>            Assignee: Phil Yang
>            Priority: Critical
>         Attachments: 15325-test.txt, HBASE-15325-v1.txt, 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.txt
>
>
> 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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