[ https://issues.apache.org/jira/browse/HDFS-8959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14715360#comment-14715360 ]
Hadoop QA commented on HDFS-8959: --------------------------------- \\ \\ | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:red}-1{color} | pre-patch | 19m 31s | Pre-patch trunk has 6 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 | 7m 44s | There were no new javac warning messages. | | {color:green}+1{color} | javadoc | 9m 59s | 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:green}+1{color} | checkstyle | 2m 32s | There were no new checkstyle issues. | | {color:green}+1{color} | whitespace | 0m 6s | The patch has no lines that end in whitespace. | | {color:green}+1{color} | install | 1m 40s | mvn install still works. | | {color:green}+1{color} | eclipse:eclipse | 0m 32s | The patch built with eclipse:eclipse. | | {color:green}+1{color} | findbugs | 4m 32s | The patch does not introduce any new Findbugs (version 3.0.0) warnings. | | {color:green}+1{color} | native | 3m 16s | Pre-build of native portion | | {color:green}+1{color} | hdfs tests | 163m 49s | Tests passed in hadoop-hdfs. | | {color:green}+1{color} | hdfs tests | 0m 29s | Tests passed in hadoop-hdfs-client. | | | | 214m 35s | | \\ \\ || Subsystem || Report/Notes || | Patch URL | http://issues.apache.org/jira/secure/attachment/12752505/HDFS-8959-01.patch | | Optional Tests | javadoc javac unit findbugs checkstyle | | git revision | trunk / a4d9acc | | Pre-patch Findbugs warnings | https://builds.apache.org/job/PreCommit-HDFS-Build/12139/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs.html | | Pre-patch Findbugs warnings | https://builds.apache.org/job/PreCommit-HDFS-Build/12139/artifact/patchprocess/trunkFindbugsWarningshadoop-hdfs-client.html | | hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/12139/artifact/patchprocess/testrun_hadoop-hdfs.txt | | hadoop-hdfs-client test log | https://builds.apache.org/job/PreCommit-HDFS-Build/12139/artifact/patchprocess/testrun_hadoop-hdfs-client.txt | | Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/12139/testReport/ | | Java | 1.7.0_55 | | uname | Linux asf906.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/12139/console | This message was automatically generated. > Provide an iterator-based API for listing all the snapshottable directories > --------------------------------------------------------------------------- > > Key: HDFS-8959 > URL: https://issues.apache.org/jira/browse/HDFS-8959 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Rakesh R > Assignee: Rakesh R > Attachments: HDFS-8959-00.patch, HDFS-8959-01.patch > > > Presently {{DistributedFileSystem#getSnapshottableDirListing()}} is sending > all the {{SnapshottableDirectoryStatus[]}} array to the clients. Now the > client should have enough space to hold it in memory. There could be chance > that the client JVMs running out of memory because of this. Also, some time > back there was a > [comment|https://issues.apache.org/jira/browse/HDFS-8643?focusedCommentId=14658800&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14658800] > about RPC packet limitation and a large number of snapshot list can again > cause issues. > I believe iterator based {{DistributedFileSystem#listSnapshottableDirs()}} > API would be a good addition! -- This message was sent by Atlassian JIRA (v6.3.4#6332)