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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11774) Avoid allocating unnecessary tag iterators
Date Wed, 20 Aug 2014 03:03:19 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14103301#comment-14103301
] 

Hudson commented on HBASE-11774:
--------------------------------

SUCCESS: Integrated in HBase-0.98-on-Hadoop-1.1 #432 (See [https://builds.apache.org/job/HBase-0.98-on-Hadoop-1.1/432/])
HBASE-11774 Avoid allocating unnecessary tag iterators (apurtell: rev e26411fc75d59c14f25cf9d1455618b34cba44c1)
* hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/AccessController.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/TableAuthManager.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/security/visibility/VisibilityLabelFilter.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/security/visibility/VisibilityController.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/security/visibility/VisibilityUtils.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/AccessControlLists.java


> Avoid allocating unnecessary tag iterators
> ------------------------------------------
>
>                 Key: HBASE-11774
>                 URL: https://issues.apache.org/jira/browse/HBASE-11774
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 0.99.0, 2.0.0, 0.98.6
>
>         Attachments: HBASE-11774.patch, HBASE-11774_v2-0.98.patch, HBASE-11774_v2.patch
>
>
> We can avoid an unnecessary object allocation, sometimes in hot code paths, by not creating
a tag iterator if the cell's tag area is of length zero, signifying no tags present.



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