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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16704) Scan will be broken while working with DBE and KeyValueCodecWithTags
Date Sun, 25 Sep 2016 13:49:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15520858#comment-15520858
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Ted Yu commented on HBASE-16704:
--------------------------------

lgtm
{code}
576	    // From non encoded HFiles, we always read back KeyValue or its derives. (Note : When
HFile
{code}
derives -> descendant

> Scan will be broken while working with DBE and KeyValueCodecWithTags
> --------------------------------------------------------------------
>
>                 Key: HBASE-16704
>                 URL: https://issues.apache.org/jira/browse/HBASE-16704
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Yu Sun
>            Assignee: Anoop Sam John
>             Fix For: 2.0.0
>
>         Attachments: HBASE-16704.patch
>
>
> scan will always broken if we set LIMIT more than 1 with rs  hbase.client.rpc.codec set
to org.apache.hadoop.hbase.codec.KeyValueCodecWithTags.
> How to reproduce:
> 1. 1 master + 1 rs, codec use KeyValueCodecWithTags.
> 2.  create a table table_1024B_30g,1 cf and with only 1 qualifier, then load some data
with ycsb,.  Use Diff DataBlockEncoding
> 3. scan 'table_1024B_30g', {LIMIT => 2, STARTROW => 'user5499'}, STARTROW  is set
any valid start row.
> 4. scan failed.
> this should be bug in KeyValueCodecWithTags, after some investigations, I found some
the key not serialized correctly.



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