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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12594) SnapshotDiff - snapshotDiff fails if the snapshotDiff report exceeds the RPC response limit
Date Wed, 08 Nov 2017 19:44:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16244611#comment-16244611
] 

Hadoop QA commented on HDFS-12594:
----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 11s{color} | {color:blue}
Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  0s{color} |
{color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m  0s{color}
| {color:green} The patch appears to include 1 new or modified test files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 11s{color} | {color:blue}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 18m 41s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 34s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 54s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 48s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 12m 42s{color}
| {color:green} branch has no errors when building and testing our client artifacts. {color}
|
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 22s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 10s{color} |
{color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m  8s{color} | {color:blue}
Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 35s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 48s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green}  1m 48s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 48s{color} | {color:green}
the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  0m 53s{color}
| {color:orange} hadoop-hdfs-project: The patch generated 4 new + 906 unchanged - 0 fixed
= 910 total (was 906) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 49s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m  0s{color}
| {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green}  0m  1s{color} | {color:green}
The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 10m 42s{color}
| {color:green} patch has no errors when building and testing our client artifacts. {color}
|
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 52s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 12s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  1m 16s{color} | {color:green}
hadoop-hdfs-client in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 97m  8s{color} | {color:red}
hadoop-hdfs in the patch failed. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red}  0m 24s{color} | {color:red}
The patch generated 11 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}160m 18s{color} | {color:black}
{color} |
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|| Reason || Tests ||
| Unreaped Processes | hadoop-hdfs:3 |
| Failed junit tests | hadoop.hdfs.TestReadStripedFileWithDNFailure |
|   | hadoop.hdfs.server.datanode.TestBpServiceActorScheduler |
|   | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure180 |
|   | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure |
|   | hadoop.hdfs.TestFSOutputSummer |
|   | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure020 |
|   | hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting |
|   | hadoop.hdfs.server.blockmanagement.TestUnderReplicatedBlocks |
|   | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure050 |
|   | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure190 |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:5b98639 |
| JIRA Issue | HDFS-12594 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12896682/HDFS-12594.005.patch
|
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  shadedclient
 findbugs  checkstyle  cc  xml  |
| uname | Linux 21ccc70bdb7b 3.13.0-117-generic #164-Ubuntu SMP Fri Apr 7 11:05:26 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / cb35a59 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_131 |
| findbugs | v3.1.0-RC1 |
| checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/22008/artifact/out/diff-checkstyle-hadoop-hdfs-project.txt
|
| Unreaped Processes Log | https://builds.apache.org/job/PreCommit-HDFS-Build/22008/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs-reaper.txt
|
| unit | https://builds.apache.org/job/PreCommit-HDFS-Build/22008/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/22008/testReport/ |
| asflicense | https://builds.apache.org/job/PreCommit-HDFS-Build/22008/artifact/out/patch-asflicense-problems.txt
|
| Max. process+thread count | 3615 (vs. ulimit of 5000) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-client hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project
|
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/22008/console |
| Powered by | Apache Yetus 0.7.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> SnapshotDiff - snapshotDiff fails if the snapshotDiff report exceeds the RPC response
limit
> -------------------------------------------------------------------------------------------
>
>                 Key: HDFS-12594
>                 URL: https://issues.apache.org/jira/browse/HDFS-12594
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs
>            Reporter: Shashikant Banerjee
>            Assignee: Shashikant Banerjee
>         Attachments: HDFS-12594.001.patch, HDFS-12594.002.patch, HDFS-12594.003.patch,
HDFS-12594.004.patch, HDFS-12594.005.patch, SnapshotDiff_Improvemnets .pdf
>
>
> The snapshotDiff command fails if the snapshotDiff report size is larger than the configuration
value of ipc.maximum.response.length which is by default 128 MB. 
> Worst case, with all Renames ops in sanpshots each with source and target name equal
to MAX_PATH_LEN which is 8k characters, this would result in at 8192 renames.
>  
> SnapshotDiff is currently used by distcp to optimize copy operations and in case of the
the diff report exceeding the limit , it fails with the below exception:
> Test set: org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotDiffReport
> -------------------------------------------------------------------------------
> Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 112.095 sec <<<
FAILURE! - in org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotDiffReport
> testDiffReportWithMillionFiles(org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotDiffReport)
 Time elapsed: 111.906 sec  <<< ERROR!
> java.io.IOException: Failed on local exception: org.apache.hadoop.ipc.RpcException: RPC
response exceeds maximum data length; Host Details : local host is: "hw15685.local/10.200.5.230";
destination host is: "localhost":59808;
> Attached is the proposal for the changes required.



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