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Hadoop QA commented on HDFS-8865: --------------------------------- \\ \\ | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | pre-patch | 26m 11s | 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 2 new or modified test files. | | {color:green}+1{color} | javac | 8m 59s | There were no new javac warning messages. | | {color:green}+1{color} | javadoc | 10m 20s | There were no new javadoc warning messages. | | {color:green}+1{color} | release audit | 0m 24s | The applied patch does not increase the total number of release audit warnings. | | {color:red}-1{color} | checkstyle | 1m 55s | The applied patch generated 10 new checkstyle issues (total was 491, now 498). | | {color:green}+1{color} | whitespace | 0m 1s | The patch has no lines that end in whitespace. | | {color:green}+1{color} | install | 1m 28s | mvn install still works. | | {color:green}+1{color} | eclipse:eclipse | 0m 35s | The patch built with eclipse:eclipse. | | {color:red}-1{color} | findbugs | 2m 44s | The patch appears to introduce 1 new Findbugs (version 3.0.0) warnings. | | {color:green}+1{color} | native | 3m 9s | Pre-build of native portion | | {color:red}-1{color} | hdfs tests | 175m 32s | Tests failed in hadoop-hdfs. | | | | 231m 23s | | \\ \\ || Reason || Tests || | FindBugs | module:hadoop-hdfs | | Failed unit tests | hadoop.hdfs.server.namenode.snapshot.TestSnapshot | | | hadoop.hdfs.TestLeaseRecovery2 | | | hadoop.hdfs.server.namenode.snapshot.TestRenameWithSnapshots | | Timed out tests | org.apache.hadoop.cli.TestHDFSCLI | \\ \\ || Subsystem || Report/Notes || | Patch URL | http://issues.apache.org/jira/secure/attachment/12749347/HDFS-8865.patch | | Optional Tests | javadoc javac unit findbugs checkstyle | | git revision | trunk / 8f73bdd | | checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/11938/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt | | Findbugs warnings | https://builds.apache.org/job/PreCommit-HDFS-Build/11938/artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html | | hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/11938/artifact/patchprocess/testrun_hadoop-hdfs.txt | | Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/11938/testReport/ | | Java | 1.7.0_55 | | uname | Linux asf904.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/11938/console | This message was automatically generated. > Improve quota initialization performance > ---------------------------------------- > > Key: HDFS-8865 > URL: https://issues.apache.org/jira/browse/HDFS-8865 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Kihwal Lee > Assignee: Kihwal Lee > Attachments: HDFS-8865.patch > > > After replaying edits, the whole file system tree is recursively scanned in > order to initialize the quota. For big name space, this can take a very long > time. Since this is done during namenode failover, it also affects failover > latency. > By using the Fork-Join framework, I was able to greatly reduce the > initialization time. The following is the test result using the fsimage from > one of the big name nodes we have. > || threads || seconds|| > | 1 (existing) | 55| > | 1 (fork-join) | 68 | > | 4 | 16 | > | 8 | 8 | > | 12 | 6 | > | 16 | 5 | > | 20 | 4 | -- This message was sent by Atlassian JIRA (v6.3.4#6332)