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https://issues.apache.org/jira/browse/SOLR-12748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shalin Shekhar Mangar updated SOLR-12748:
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Attachment: logs.tar.gz
> OOM on Solr cloud example startup on master
> -------------------------------------------
>
> Key: SOLR-12748
> URL: https://issues.apache.org/jira/browse/SOLR-12748
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Reporter: Shalin Shekhar Mangar
> Priority: Major
> Fix For: master (8.0), 7.5
>
> Attachments: logs.tar.gz
>
>
> I was testing a fix for SOLR-11966 on master with SHA
> {{89d598e9e891e87825d45aabea45e708a51ba860}}. My local state was admittedly
> dirty having cycled through many full cluster restarts including running
> embedded ZK then pointing Solr to an external ZK and cycling back again to
> embedded ZK. One one such restart after pointing solr back to embedded zk
> from an external one, the start script hanged for a while on the soft commit
> step and then the Solr went out of memory.
> I ran through the following commands during these tests:
> {code}
> cd solr
> ant server
> ./bin/solr -e cloud -noprompt
> ./bin/solr stop -all
> ./bin/solr -e cloud -noprompt
> ./bin/solr stop -all
> ./bin/solr -e cloud -noprompt
> ./bin/solr stop -all
> ./bin/solr -c -p 8983 -s "example/cloud/node1/solr/" -z localhost:2181
> ./bin/solr stop -all
> ./bin/solr -c -p 8983 -s "example/cloud/node1/solr/" -z localhost:2181
> ./bin/solr -c -p 7574 -s "example/cloud/node2/solr/" -z localhost:2181
> ./bin/solr stop -all
> ./bin/solr start -e cloud -noprompt
> {code}
> {code}
> *** [WARN] *** Your open file limit is currently 32768.
> It should be set to 65000 to avoid operational disruption.
> If you no longer wish to see this warning, set SOLR_ULIMIT_CHECKS to false
> in your profile or solr.in.sh
> INFO - 2018-09-06 08:51:41.989;
> org.apache.solr.util.configuration.SSLCredentialProviderFactory; Processing
> SSL Credential Provider chain: env;sysprop
> Welcome to the SolrCloud example!
> Starting up 2 Solr nodes for your example SolrCloud cluster.
> Solr home directory
> /home/shalin/work/oss/lucene-solr/solr/example/cloud/node1/solr already
> exists.
> /home/shalin/work/oss/lucene-solr/solr/example/cloud/node2 already exists.
> Starting up Solr on port 8983 using command:
> "bin/solr" start -cloud -p 8983 -s "example/cloud/node1/solr"
> *** [WARN] *** Your open file limit is currently 32768.
> It should be set to 65000 to avoid operational disruption.
> If you no longer wish to see this warning, set SOLR_ULIMIT_CHECKS to false
> in your profile or solr.in.sh
> Waiting up to 180 seconds to see Solr running on port 8983 [|]
> Started Solr server on port 8983 (pid=20475). Happy searching!
>
> Starting up Solr on port 7574 using command:
> "bin/solr" start -cloud -p 7574 -s "example/cloud/node2/solr" -z
> localhost:9983
> *** [WARN] *** Your open file limit is currently 32768.
> It should be set to 65000 to avoid operational disruption.
> If you no longer wish to see this warning, set SOLR_ULIMIT_CHECKS to false
> in your profile or solr.in.sh
> Waiting up to 180 seconds to see Solr running on port 7574 [|]
> Started Solr server on port 7574 (pid=20843). Happy searching!
> INFO - 2018-09-06 08:51:50.156;
> org.apache.solr.common.cloud.ConnectionManager; zkClient has connected
> INFO - 2018-09-06 08:51:50.178; org.apache.solr.common.cloud.ZkStateReader;
> Updated live nodes from ZooKeeper... (0) -> (2)
> INFO - 2018-09-06 08:51:50.197;
> org.apache.solr.client.solrj.impl.ZkClientClusterStateProvider; Cluster at
> localhost:9983 ready
> Collection 'gettingstarted' already exists! Skipping collection creation step.
> Enabling auto soft-commits with maxTime 3 secs using the Config API
> POSTing request to Config API:
> http://localhost:8983/solr/gettingstarted/config
> {"set-property":{"updateHandler.autoSoftCommit.maxTime":"3000"}}
> ^CJava HotSpot(TM) 64-Bit Server VM warning: Exception
> java.lang.OutOfMemoryError occurred dispatching signal SIGINT to handler- the
> VM may need to be forcibly terminated
> {code}
> After I saw the OOM warning, I used {{kill -3}} to get thread dumps for both
> Solr processes and then had to manually kill both processes. It is also
> curious why the OOM killer script did not fire.
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