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Hadoop QA commented on HDFS-4015: --------------------------------- \\ \\ | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:red}-1{color} | pre-patch | 21m 46s | Pre-patch trunk has 748 extant Findbugs (version 3.0.0) warnings. | | {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 2 new or modified test files. | | {color:green}+1{color} | javac | 8m 9s | There were no new javac warning messages. | | {color:green}+1{color} | javadoc | 10m 30s | There were no new javadoc warning messages. | | {color:red}-1{color} | release audit | 0m 19s | The applied patch generated 1 release audit warnings. | | {color:red}-1{color} | checkstyle | 2m 46s | The applied patch generated 3 new checkstyle issues (total was 138, now 138). | | {color:green}+1{color} | whitespace | 0m 1s | The patch has no lines that end in whitespace. | | {color:green}+1{color} | install | 1m 38s | mvn install still works. | | {color:green}+1{color} | eclipse:eclipse | 0m 36s | The patch built with eclipse:eclipse. | | {color:green}+1{color} | findbugs | 4m 38s | The patch does not introduce any new Findbugs (version 3.0.0) warnings. | | {color:green}+1{color} | native | 3m 11s | Pre-build of native portion | | {color:red}-1{color} | hdfs tests | 154m 54s | Tests failed in hadoop-hdfs. | | {color:green}+1{color} | hdfs tests | 0m 34s | Tests passed in hadoop-hdfs-client. | | | | 209m 6s | | \\ \\ || Reason || Tests || | Failed unit tests | hadoop.hdfs.server.namenode.TestAddStripedBlocks | | | hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFSStriped | | | hadoop.hdfs.server.datanode.TestDirectoryScanner | | | hadoop.hdfs.server.balancer.TestBalancer | | Timed out tests | org.apache.hadoop.hdfs.TestWriteReadStripedFile | | | org.apache.hadoop.hdfs.server.namenode.TestFileContextXAttr | \\ \\ || Subsystem || Report/Notes || | Patch URL | http://issues.apache.org/jira/secure/attachment/12765483/HDFS-4015.003.patch | | Optional Tests | javadoc javac unit findbugs checkstyle | | git revision | trunk / fde729f | | Pre-patch Findbugs warnings | https://builds.apache.org/job/PreCommit-HDFS-Build/12847/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs-client.html | | Release Audit | https://builds.apache.org/job/PreCommit-HDFS-Build/12847/artifact/patchprocess/patchReleaseAuditProblems.txt | | checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/12847/artifact/patchprocess/diffcheckstylehadoop-hdfs-client.txt | | hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/12847/artifact/patchprocess/testrun_hadoop-hdfs.txt | | hadoop-hdfs-client test log | https://builds.apache.org/job/PreCommit-HDFS-Build/12847/artifact/patchprocess/testrun_hadoop-hdfs-client.txt | | Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/12847/testReport/ | | Java | 1.7.0_55 | | uname | Linux asf902.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/12847/console | This message was automatically generated. > Safemode should count and report orphaned blocks > ------------------------------------------------ > > Key: HDFS-4015 > URL: https://issues.apache.org/jira/browse/HDFS-4015 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode > Affects Versions: 3.0.0 > Reporter: Todd Lipcon > Assignee: Anu Engineer > Attachments: HDFS-4015.001.patch, HDFS-4015.002.patch, > HDFS-4015.003.patch > > > The safemode status currently reports the number of unique reported blocks > compared to the total number of blocks referenced by the namespace. However, > it does not report the inverse: blocks which are reported by datanodes but > not referenced by the namespace. > In the case that an admin accidentally starts up from an old image, this can > be confusing: safemode and fsck will show "corrupt files", which are the > files which actually have been deleted but got resurrected by restarting from > the old image. This will convince them that they can safely force leave > safemode and remove these files -- after all, they know that those files > should really have been deleted. However, they're not aware that leaving > safemode will also unrecoverably delete a bunch of other block files which > have been orphaned due to the namespace rollback. > I'd like to consider reporting something like: "900000 of expected 1000000 > blocks have been reported. Additionally, 10000 blocks have been reported > which do not correspond to any file in the namespace. Forcing exit of > safemode will unrecoverably remove those data blocks" > Whether this statistic is also used for some kind of "inverse safe mode" is > the logical next step, but just reporting it as a warning seems easy enough > to accomplish and worth doing. -- This message was sent by Atlassian JIRA (v6.3.4#6332)