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Hadoop QA commented on HDFS-8344: --------------------------------- \\ \\ | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | pre-patch | 17m 13s | Pre-patch trunk compilation is healthy. | | {color:green}+1{color} | @author | 0m 0s | The patch does not contain any @author tags. | | {color:green}+1{color} | tests included | 0m 0s | The patch appears to include 1 new or modified test files. | | {color:green}+1{color} | javac | 7m 40s | There were no new javac warning messages. | | {color:green}+1{color} | javadoc | 9m 41s | There were no new javadoc warning messages. | | {color:green}+1{color} | release audit | 0m 22s | The applied patch does not increase the total number of release audit warnings. | | {color:red}-1{color} | checkstyle | 1m 24s | The applied patch generated 5 new checkstyle issues (total was 854, now 855). | | {color:green}+1{color} | whitespace | 0m 1s | The patch has no lines that end in whitespace. | | {color:green}+1{color} | install | 1m 23s | mvn install still works. | | {color:green}+1{color} | eclipse:eclipse | 0m 33s | The patch built with eclipse:eclipse. | | {color:red}-1{color} | findbugs | 2m 37s | The patch appears to introduce 1 new Findbugs (version 3.0.0) warnings. | | {color:green}+1{color} | native | 3m 4s | Pre-build of native portion | | {color:red}-1{color} | hdfs tests | 161m 46s | Tests failed in hadoop-hdfs. | | | | 205m 47s | | \\ \\ || Reason || Tests || | FindBugs | module:hadoop-hdfs | | Failed unit tests | hadoop.hdfs.TestDistributedFileSystem | \\ \\ || Subsystem || Report/Notes || | Patch URL | http://issues.apache.org/jira/secure/attachment/12745662/HDFS-8344.06.patch | | Optional Tests | javadoc javac unit findbugs checkstyle | | git revision | trunk / 1ba2986 | | checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/11730/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt | | Findbugs warnings | https://builds.apache.org/job/PreCommit-HDFS-Build/11730/artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html | | hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/11730/artifact/patchprocess/testrun_hadoop-hdfs.txt | | Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/11730/testReport/ | | Java | 1.7.0_55 | | uname | Linux asf900.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux | | Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/11730/console | This message was automatically generated. > NameNode doesn't recover lease for files with missing blocks > ------------------------------------------------------------ > > Key: HDFS-8344 > URL: https://issues.apache.org/jira/browse/HDFS-8344 > Project: Hadoop HDFS > Issue Type: Bug > Components: namenode > Affects Versions: 2.7.0 > Reporter: Ravi Prakash > Assignee: Ravi Prakash > Attachments: HDFS-8344.01.patch, HDFS-8344.02.patch, > HDFS-8344.03.patch, HDFS-8344.04.patch, HDFS-8344.05.patch, HDFS-8344.06.patch > > > I found another\(?) instance in which the lease is not recovered. This is > reproducible easily on a pseudo-distributed single node cluster > # Before you start it helps if you set. This is not necessary, but simply > reduces how long you have to wait > {code} > public static final long LEASE_SOFTLIMIT_PERIOD = 30 * 1000; > public static final long LEASE_HARDLIMIT_PERIOD = 2 * > LEASE_SOFTLIMIT_PERIOD; > {code} > # Client starts to write a file. (could be less than 1 block, but it hflushed > so some of the data has landed on the datanodes) (I'm copying the client code > I am using. I generate a jar and run it using $ hadoop jar TestHadoop.jar) > # Client crashes. (I simulate this by kill -9 the $(hadoop jar > TestHadoop.jar) process after it has printed "Wrote to the bufferedWriter" > # Shoot the datanode. (Since I ran on a pseudo-distributed cluster, there was > only 1) > I believe the lease should be recovered and the block should be marked > missing. However this is not happening. The lease is never recovered. > The effect of this bug for us was that nodes could not be decommissioned > cleanly. Although we knew that the client had crashed, the Namenode never > released the leases (even after restarting the Namenode) (even months > afterwards). There are actually several other cases too where we don't > consider what happens if ALL the datanodes die while the file is being > written, but I am going to punt on that for another time. -- This message was sent by Atlassian JIRA (v6.3.4#6332)