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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8166) Avoid writing the memstoreTS into HFiles when possible
Date Fri, 05 Apr 2013 01:01:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13623183#comment-13623183
] 

Hudson commented on HBASE-8166:
-------------------------------

Integrated in HBase-0.94-security-on-Hadoop-23 #13 (See [https://builds.apache.org/job/HBase-0.94-security-on-Hadoop-23/13/])
    HBASE-8166 Avoid writing the memstoreTS into HFiles when possible (Revision 1459961)

     Result = FAILURE
larsh : 
Files : 
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/io/hfile/HFile.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV1.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV2.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/Compactor.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFile.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/TestCacheOnWriteInSchema.java

                
> Avoid writing the memstoreTS into HFiles when possible
> ------------------------------------------------------
>
>                 Key: HBASE-8166
>                 URL: https://issues.apache.org/jira/browse/HBASE-8166
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.95.0, 0.98.0, 0.94.7
>
>         Attachments: 8166-0.94.txt, 8166-0.95.txt, 8166-0.96.txt
>
>
> See discussion in HBASE-8151.
> Upon compaction we can check all the involved HFiles. If all of them have a MAX_MEMSTORE_TS
< the smallest scannner readpoint, we create a writer that does not write the memstoreTS.

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