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Hadoop QA commented on HDFS-5394: --------------------------------- {color:red}-1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12612314/HDFS-5394.007.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 1 new or modified test files. {color:red}-1 javac{color}. The applied patch generated 1548 javac compiler warnings (more than the trunk's current 1547 warnings). {color:red}-1 javadoc{color}. The javadoc tool appears to have generated 1 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:green}+1 release audit{color}. The applied patch does not increase the total number of 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.server.namenode.TestPathBasedCacheRequests org.apache.hadoop.hdfs.server.datanode.TestFsDatasetCache {color:green}+1 contrib tests{color}. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/5343//testReport/ Javac warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/5343//artifact/trunk/patchprocess/diffJavacWarnings.txt Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5343//console This message is automatically generated. > fix race conditions in DN caching and uncaching > ----------------------------------------------- > > Key: HDFS-5394 > URL: https://issues.apache.org/jira/browse/HDFS-5394 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: datanode, namenode > Affects Versions: 3.0.0 > Reporter: Colin Patrick McCabe > Assignee: Colin Patrick McCabe > Attachments: HDFS-5394-caching.001.patch, > HDFS-5394-caching.002.patch, HDFS-5394-caching.003.patch, > HDFS-5394-caching.004.patch, HDFS-5394.005.patch, HDFS-5394.006.patch, > HDFS-5394.007.patch > > > The DN needs to handle situations where it is asked to cache the same replica > more than once. (Currently, it can actually do two mmaps and mlocks.) It > also needs to handle the situation where caching a replica is cancelled > before said caching completes. -- This message was sent by Atlassian JIRA (v6.1#6144)