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https://issues.apache.org/jira/browse/SOLR-12776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erick Erickson updated SOLR-12776:
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Attachment: SOLR-12776.patch
> 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, simple-rename-fix.patch
>
>
> (issue firstly discussed in here:
> http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201809.mbox/%[email protected]%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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