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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15338) Add a option to disable the data block cache for testing the performance of underlying file system
Date Wed, 09 Mar 2016 07:32:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15186670#comment-15186670
] 

Hudson commented on HBASE-15338:
--------------------------------

FAILURE: Integrated in HBase-Trunk_matrix #766 (See [https://builds.apache.org/job/HBase-Trunk_matrix/766/])
HBASE-15420: TestCacheConfig failed after HBASE-15338 (liushaohui: rev 7e4e8dc3e9e0edb287fe27e488736c906b1d0ff5)
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestCacheConfig.java


> Add a option to disable the data block cache for testing the performance of underlying
file system
> --------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-15338
>                 URL: https://issues.apache.org/jira/browse/HBASE-15338
>             Project: HBase
>          Issue Type: Improvement
>          Components: integration tests
>            Reporter: Liu Shaohui
>            Assignee: Liu Shaohui
>            Priority: Minor
>             Fix For: 2.0.0
>
>         Attachments: HBASE-15338-trunk-v1.diff, HBASE-15338-trunk-v2.diff, HBASE-15338-trunk-v3.diff,
HBASE-15338-trunk-v4.diff, HBASE-15338-trunk-v5.diff, HBASE-15338-trunk-v6.diff, HBASE-15338-trunk-v7.diff
>
>
> When testing and comparing the performance of different file systems(HDFS, Azure blob
storage, AWS S3 and so on) for HBase, it's better to avoid the affect of the HBase BlockCache
and get the actually random read latency when data block is read from underlying file system.
(Usually, the index block and meta block should be cached in memory in the testing).
> So we add a option in CacheConfig to disable the data block cache.
> Suggestions are welcomed~ Thanks



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