[jira] [Updated] (SOLR-9360) Solr script not properly checking SOLR_PID

["Erick Erickson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-9360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Erick Erickson updated SOLR-9360:
---------------------------------
    Attachment: SOLR-9360.patch

I think this does it, I'll check it in probably tomorrow unless people object.

> Solr script not properly checking SOLR_PID
> ------------------------------------------
>
>                 Key: SOLR-9360
>                 URL: https://issues.apache.org/jira/browse/SOLR-9360
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: scripts and tools
>    Affects Versions: 6.1
>            Reporter: Alessandro Benedetti
>            Assignee: Erick Erickson
>         Attachments: SOLR-9360.patch, SOLR_9360.patch
>
>
> In the solr script we see in 3-4 areas  this check :
> SOLR_PID=`ps auxww | grep start\.jar | grep -w $SOLR_PORT | grep -v grep | awk '{print $2}' | sort -r`
> This can potentially prevent a solr instance to start in the case another process by any chance contains the port int the command itself ( not necessarily actually using the port) .
> e.g.
> java -server -Djetty.port=10504 -DSTOP.PORT=9504 -DSTOP.KEY=solrrocks -DMASTER_CORE_URL=external-server:10500/solr -jar start.jar --module=http
> A solr is running on 10504.
> A new Solr will not be able to start on 10500 ( but actually the port is free).
> This should be replaced by a real check if the port is used ( like netstat or similar) .



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