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Hadoop QA commented on HDFS-4949: --------------------------------- {color:red}-1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12610221/HDFS-4949-consolidated.patch against trunk revision . {color:green}+1 @author{color}. The patch does not contain any @author tags. {color:green}+1 tests included{color}. The patch appears to include 30 new or modified test files. {color:red}-1 javac{color}. The applied patch generated 1551 javac compiler warnings (more than the trunk's current 1548 warnings). {color:green}+1 javadoc{color}. The javadoc tool did not generate any 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 1.3.9) warnings. {color:red}-1 release audit{color}. The applied patch generated 1 release audit warnings. {color:red}-1 core tests{color}. The patch failed these unit tests in hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs: org.apache.hadoop.hdfs.tools.offlineEditsViewer.TestOfflineEditsViewer {color:green}+1 contrib tests{color}. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/5273//testReport/ Release audit warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/5273//artifact/trunk/patchprocess/patchReleaseAuditProblems.txt Javac warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/5273//artifact/trunk/patchprocess/diffJavacWarnings.txt Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5273//console This message is automatically generated. > Centralized cache management in HDFS > ------------------------------------ > > Key: HDFS-4949 > URL: https://issues.apache.org/jira/browse/HDFS-4949 > Project: Hadoop HDFS > Issue Type: New Feature > Components: datanode, namenode > Affects Versions: 3.0.0, 2.3.0 > Reporter: Andrew Wang > Assignee: Andrew Wang > Attachments: caching-design-doc-2013-07-02.pdf, > caching-design-doc-2013-08-09.pdf, caching-design-doc-2013-10-24.pdf, > caching-testplan.pdf, HDFS-4949-consolidated.patch > > > HDFS currently has no support for managing or exposing in-memory caches at > datanodes. This makes it harder for higher level application frameworks like > Hive, Pig, and Impala to effectively use cluster memory, because they cannot > explicitly cache important datasets or place their tasks for memory locality. -- This message was sent by Atlassian JIRA (v6.1#6144)