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Hadoop QA commented on HDFS-7454: --------------------------------- {color:green}+1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12684832/HDFS-7454-004.patch against trunk revision 7caa3bc. {color:green}+1 @author{color}. The patch does not contain any @author tags. {color:green}+1 tests included{color}. The patch appears to include 1 new or modified test files. {color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings. {color:green}+1 javadoc{color}. There were no new javadoc warning messages. {color:green}+1 eclipse:eclipse{color}. The patch built with eclipse:eclipse. {color:green}+1 findbugs{color}. The patch does not introduce any new Findbugs (version 2.0.3) warnings. {color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings. {color:green}+1 core tests{color}. The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs. {color:green}+1 contrib tests{color}. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/8911//testReport/ Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/8911//console This message is automatically generated. > Reduce memory footprint for AclEntries in NameNode > -------------------------------------------------- > > Key: HDFS-7454 > URL: https://issues.apache.org/jira/browse/HDFS-7454 > Project: Hadoop HDFS > Issue Type: Bug > Components: namenode > Reporter: Vinayakumar B > Assignee: Vinayakumar B > Attachments: HDFS-7454-001.patch, HDFS-7454-002.patch, > HDFS-7454-003.patch, HDFS-7454-004.patch > > > HDFS-5620 indicated a GlobalAclSet containing unique {{AclFeature}} can be > de-duplicated to save the memory in NameNode. However it was not implemented > at that time. > This Jira re-proposes same implementation, along with de-duplication of > unique {{AclEntry}} across all ACLs. > One simple usecase is: > A mapreduce user's home directory with the set of default ACLs, under which > lot of other files/directories could be created when jobs is run. Here all > the default ACLs of parent directory will be duplicated till the explicit > delete of those ACLs. With de-duplication,only one object will be in memory > for the same Entry across all ACLs of all files/directories. -- This message was sent by Atlassian JIRA (v6.3.4#6332)