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https://issues.apache.org/jira/browse/SOLR-9290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15378327#comment-15378327
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Shalin Shekhar Mangar edited comment on SOLR-9290 at 7/14/16 8:39 PM:
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Patch which starts the idle connection evictor for both UpdateShardHandler and
HttpShardHandlerFactory. I changed the HttpShardHandlerFactory to use an
external connection pool ala UpdateShardHandler. The defaults are set to sleep
for 5 seconds and expire connections and close idle connections older than 40
seconds. I chose 40 seconds because it is slightly lower than the jetty timeout
of 50 seconds. Both of these values are configurable for both updates and
queries.
This patch applies to branch_6x.
was (Author: shalinmangar):
Patch which starts the idle connection evictor for both UpdateShardHandler and
HttpShardHandlerFactory. I changed the HttpShardHandlerFactory to use an
external connection pool ala UpdateShardHandler. The defaults are set to sleep
for 5 seconds and expire connections and close idle connections older than 40
seconds. I chose 40 seconds because it is slightly lower than the jetty timeout
of 50 seconds. Both of these values are configurable for both updates and
queries.
> TCP-connections in CLOSE_WAIT spikes during heavy indexing when SSL is enabled
> ------------------------------------------------------------------------------
>
> Key: SOLR-9290
> URL: https://issues.apache.org/jira/browse/SOLR-9290
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 5.5.1, 5.5.2
> Reporter: Anshum Gupta
> Priority: Critical
> Attachments: SOLR-9290-debug.patch, SOLR-9290-debug.patch,
> SOLR-9290.patch, index.sh, setup-solr.sh, setup-solr.sh
>
>
> Heavy indexing on Solr with SSL leads to a lot of connections in CLOSE_WAIT
> state.
> At my workplace, we have seen this issue only with 5.5.1 and could not
> reproduce it with 5.4.1 but from my conversation with Shalin, he knows of
> users with 5.3.1 running into this issue too.
> Here's an excerpt from the email [~shaie] sent to the mailing list (about
> what we see:
> {quote}
> 1) It consistently reproduces on 5.5.1, but *does not* reproduce on 5.4.1
> 2) It does not reproduce when SSL is disabled
> 3) Restarting the Solr process (sometimes both need to be restarted), the
> count drops to 0, but if indexing continues, they climb up again
> When it does happen, Solr seems stuck. The leader cannot talk to the
> replica, or vice versa, the replica is usually put in DOWN state and
> there's no way to fix it besides restarting the JVM.
> {quote}
> Here's the mail thread:
> http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201607.mbox/%[email protected]%3E
> Creating this issue so we could track this and have more people comment on
> what they see.
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