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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-12776) Setting of TMP in solr.cmd causes invisibility of Solr to JDK tools
Date Mon, 24 Sep 2018 04:47:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-12776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16625372#comment-16625372
] 

ASF subversion and git services commented on SOLR-12776:
--------------------------------------------------------

Commit 95cc6f4f765f0e1f78e5199868089df1ffec91e9 in lucene-solr's branch refs/heads/master
from [~cp.erickson@gmail.com]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=95cc6f4 ]

SOLR-12776: Setting of TMP in solr.cmd causes invisibility of Solr to JDK tools


> Setting of TMP in solr.cmd causes invisibility of Solr to JDK tools
> -------------------------------------------------------------------
>
>                 Key: SOLR-12776
>                 URL: https://issues.apache.org/jira/browse/SOLR-12776
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: scripts and tools
>    Affects Versions: 5.0
>         Environment: Windows. Tested with Java 8u152 and Solr 6.3.0.
>            Reporter: Petr Bodnar
>            Assignee: Erick Erickson
>            Priority: Major
>         Attachments: SOLR-12776.patch, SOLR-12776.patch, SOLR-12776.patch, simple-rename-fix.patch
>
>
> (issue firstly discussed in here: http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201809.mbox/%3C20180916154315.0922A29C@centrum.cz%3E)
> Please notice the following lines added (among others) to "solr.cmd" by commit [https://github.com/apache/lucene-solr/commit/b36c68b16e67ae701cefce052a4fdbaac88fb65c]
for https://issues.apache.org/jira/browse/SOLR-6833 about 4 years ago (v5.0):
> {code:java}
> set TMP=!SOLR_HOME:%EXAMPLE_DIR%=!
> IF NOT "%TMP%"=="%SOLR_HOME%" (
>   set "SOLR_LOGS_DIR=%SOLR_HOME%\..\logs"
>   set "LOG4J_CONFIG=file:%EXAMPLE_DIR%\resources\log4j.properties"
> ){code}
> Apparently, the new variable "TMP" is just a temporary one, but by coincidence, this
variable is also important for JVM. As this system variable tells where the "hsperfdata_<username>"
directory for storing applications' monitoring data should be located. And if this is changed,
JDK tools like JVisualVM, jps and others won't locally see the given Java application, because
they search in a different default location.
> h3. Proposed solution
> A working solution seems to be just to *rename the TMP variable* to for example TMP1
as in the attached [^simple-rename-fix.patch]. Maybe even a simple "==" comparison of SOLR_HOME
and EXAMPLE_DIR could (should?) be made, but I don't have enough time to study and test this
scenario.



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