[ 
https://issues.apache.org/jira/browse/OOZIE-3409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16733463#comment-16733463
 ] 

Hadoop QA commented on OOZIE-3409:
----------------------------------


Testing JIRA OOZIE-3409

Cleaning local git workspace

----------------------------

{color:green}+1 PATCH_APPLIES{color}
{color:green}+1 CLEAN{color}
{color:red}-1 RAW_PATCH_ANALYSIS{color}
.    {color:green}+1{color} the patch does not introduce any @author tags
.    {color:green}+1{color} the patch does not introduce any tabs
.    {color:green}+1{color} the patch does not introduce any trailing spaces
.    {color:green}+1{color} the patch does not introduce any star imports
.    {color:red}-1{color} the patch contains 1 line(s) longer than 132 
characters
.    {color:green}+1{color} the patch adds/modifies 2 testcase(s)
{color:green}+1 RAT{color}
.    {color:green}+1{color} the patch does not seem to introduce new RAT 
warnings
{color:green}+1 JAVADOC{color}
.    {color:green}+1{color} Javadoc generation succeeded with the patch
.    {color:green}+1{color} the patch does not seem to introduce new Javadoc 
warning(s)
.    {color:orange}WARNING{color}: the current HEAD has 100 Javadoc warning(s)
{color:green}+1 COMPILE{color}
.    {color:green}+1{color} HEAD compiles
.    {color:green}+1{color} patch compiles
.    {color:green}+1{color} the patch does not seem to introduce new javac 
warnings
{color:green}+1{color} There are no new bugs found in total.
. {color:green}+1{color} There are no new bugs found in [sharelib/hive2].
. {color:green}+1{color} There are no new bugs found in [sharelib/spark].
. {color:green}+1{color} There are no new bugs found in [sharelib/oozie].
. {color:green}+1{color} There are no new bugs found in [sharelib/pig].
. {color:green}+1{color} There are no new bugs found in [sharelib/streaming].
. {color:green}+1{color} There are no new bugs found in [sharelib/hive].
. {color:green}+1{color} There are no new bugs found in [sharelib/distcp].
. {color:green}+1{color} There are no new bugs found in [sharelib/hcatalog].
. {color:green}+1{color} There are no new bugs found in [sharelib/sqoop].
. {color:green}+1{color} There are no new bugs found in [sharelib/git].
. {color:green}+1{color} There are no new bugs found in [client].
. {color:green}+1{color} There are no new bugs found in [docs].
. {color:green}+1{color} There are no new bugs found in [tools].
. {color:green}+1{color} There are no new bugs found in 
[fluent-job/fluent-job-api].
. {color:green}+1{color} There are no new bugs found in [server].
. {color:green}+1{color} There are no new bugs found in [webapp].
. {color:green}+1{color} There are no new bugs found in [examples].
. {color:green}+1{color} There are no new bugs found in [core].
{color:green}+1 BACKWARDS_COMPATIBILITY{color}
.    {color:green}+1{color} the patch does not change any JPA 
Entity/Colum/Basic/Lob/Transient annotations
.    {color:green}+1{color} the patch does not modify JPA files
{color:red}-1 TESTS{color}
.    Tests run        : 3106
.    Tests failed     : 0
.    Tests in error   : 2
.    Tests timed out  : 0

{color:red}-1{color} [ERROR] There are [2] test errors in [examples]. Listing 
only the first [5] ones
testLocalOozieExampleEnd:org.apache.oozie.example.TestLocalOozieExample
testLocalOozieExampleKill:org.apache.oozie.example.TestLocalOozieExample

Check console output for the full list of errors/failures
.    {color:orange}Tests failed at first run:{color}
TestPurgeXCommand#testPurgeCoordWithWFChild1
.    For the complete list of flaky tests, see TEST-SUMMARY-FULL files.
{color:green}+1 DISTRO{color}
.    {color:green}+1{color} distro tarball builds with the patch 

----------------------------
{color:red}*-1 Overall result, please check the reported -1(s)*{color}

{color:red}. There is at least one warning, please check{color}

The full output of the test-patch run is available at

. https://builds.apache.org/job/PreCommit-OOZIE-Build/961/



> Oozie Server : Possible memory leak in EL evaluation
> ----------------------------------------------------
>
>                 Key: OOZIE-3409
>                 URL: https://issues.apache.org/jira/browse/OOZIE-3409
>             Project: Oozie
>          Issue Type: Bug
>    Affects Versions: 5.1.0
>            Reporter: Praneeth
>            Assignee: Andras Salamon
>            Priority: Major
>         Attachments: OOZIE-3409-01.patch
>
>
> I have noticed that there is a potential memory leak in the Oozie server due 
> to one of its dependencies - {{commons-el:commons-el:1.0}}. Our oozie servers 
> have been running out of memory occasionally. It happens more often when we 
> have more activity. Upon analysis of the heap dump, it seems that the culprit 
> here is the {{org.apache.commons.el.ExpressionEvaluatorImpl}} from 
> {{commons-el}} which is used in the Oozie server through 
> {{org.apache.oozie.util.ELEvaluator}} [1] . {{ExpressionEvaluatorImpl}} uses 
> a static {{Map}} [2] to cache the EL evaluations. This map never gets 
> cleared, eventually taking up all the memory. So, in an environment with 
> heavy usage and long running oozie servers, this would lead to an OOM. The 
> configurations for workflow actions we have are possibly larger than normal 
> which is worsening the situation as the Map has to maintain larger strings.
>  # 
> [https://github.com/apache/oozie/blob/release-5.1.0/core/src/main/java/org/apache/oozie/util/ELEvaluator.java#L143]
>  # 
> [http://svn.apache.org/viewvc/commons/dormant/el/trunk/src/java/org/apache/commons/el/ExpressionEvaluatorImpl.java?view=markup#l94]



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