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https://issues.apache.org/jira/browse/MAPREDUCE-7094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16468608#comment-16468608
]
Hadoop QA commented on MAPREDUCE-7094:
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| (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
16s{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:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m
0s{color} | {color:red} The patch doesn't appear to include any new or modified
tests. Please justify why no new tests are needed for this patch. Also please
list what manual steps were performed to verify this patch. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 23m
19s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
25s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
17s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
27s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
9m 59s{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} 0m
40s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
25s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
25s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
21s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
21s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}
0m 12s{color} | {color:orange}
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common:
The patch generated 1 new + 6 unchanged - 0 fixed = 7 total (was 6) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
23s{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} shadedclient {color} | {color:green}
10m 15s{color} | {color:green} patch has no errors when building and testing
our client artifacts. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 0m
48s{color} | {color:red}
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common
generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
23s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m
53s{color} | {color:green} hadoop-mapreduce-client-common in the patch passed.
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
22s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 50m 8s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs |
module:hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common
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| | org.apache.hadoop.mapred.LocalDistributedCacheManager.classLoadersCreated
is or uses a map or set of URLs, which can be a performance hog In
LocalDistributedCacheManager.java:map or set of URLs, which can be a
performance hog In LocalDistributedCacheManager.java |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:abb62dd |
| JIRA Issue | MAPREDUCE-7094 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12922610/MAPREDUCE-7094.1.patch
|
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit shadedclient findbugs checkstyle |
| uname | Linux 6cae8c0f0437 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12
13:48:03 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / cd68c7c |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_162 |
| findbugs | v3.1.0-RC1 |
| checkstyle |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7410/artifact/out/diff-checkstyle-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-common.txt
|
| findbugs |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7410/artifact/out/new-findbugs-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-common.html
|
| Test Results |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7410/testReport/ |
| Max. process+thread count | 410 (vs. ulimit of 10000) |
| modules | C:
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common
U:
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common
|
| Console output |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7410/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> LocalDistributedCacheManager leaves classloaders open, which leaks FDs
> ----------------------------------------------------------------------
>
> Key: MAPREDUCE-7094
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7094
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: Adam Szita
> Priority: Major
> Attachments: MAPREDUCE-7094.0.patch, MAPREDUCE-7094.1.patch
>
>
> When a user starts a local mapred task from Hive's beeline, it will leave
> open file descriptors on the HS2 process (which runs the mapred task).
> I debugged this and saw that it is caused by LocalDistributedCacheManager
> class, which creates a new URLClassLoader, with a classpath for the two jars
> seen below. Somewhere down the line Loaders will be created in this
> URLClassLoader for these files effectively creating the FD's on the OS level.
> This is never cleaned up after execution, although
> LocalDistributedCacheManager removes the files, it will not close the
> ClassLoader, so FDs are left open although they point to deleted files at
> that time:
> {code:java}
> [root@host-1 ~]# lsof -p 14439 | grep hadoop-hive
> java 14439 hive DEL REG 8,1 3348748
> /tmp/hadoop-hive/mapred/local/1525789796610/hive-exec-core.jar
> java 14439 hive DEL REG 8,1 3348750
> /tmp/hadoop-hive/mapred/local/1525789796609/hive-exec-1.1.0-cdh5.13.4-SNAPSHOT-core.jar
> java 14439 hive 649r REG 8,1 8112438 3348750
> /tmp/hadoop-hive/mapred/local/1525789796609/hive-exec-1.1.0-cdh5.13.4-SNAPSHOT-core.jar
> (deleted)
> java 14439 hive 650r REG 8,1 8112438 3348748
> /tmp/hadoop-hive/mapred/local/1525789796610/hive-exec-core.jar (deleted)
> {code}
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