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https://issues.apache.org/jira/browse/HBASE-15338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15182883#comment-15182883
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Hudson commented on HBASE-15338:
--------------------------------

FAILURE: Integrated in HBase-Trunk_matrix #760 (See 
[https://builds.apache.org/job/HBase-Trunk_matrix/760/])
HBASE-15338: Add a option to disable the data block cache for testing 
(liushaohui: rev 4483b3cbed0c9cc17116af2407d946e605d6d627)
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestCacheConfig.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CacheConfig.java
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.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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