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https://issues.apache.org/jira/browse/SOLR-9290?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shalin Shekhar Mangar updated SOLR-9290:
----------------------------------------
Attachment: SOLR-9290-debug.patch
setup-solr.sh
The setup-solr.sh is small script that I use to setup different versions with
SSL enabled and debug logging enabled for httpclient.
The debug logging looks like the following:
{code}
2016-07-12 13:25:05.692 DEBUG
(httpShardExecutor-4-thread-7-processing-x:xyz_shard3_replica1 r:core_node5
https:////127.0.1.1:8983//solr//xyz_shard3_replica2// n:127.0.1.1:8984_solr
s:shard3 c:xyz [https:////127.0.1.1:8983//solr//xyz_shard3_replica2//]) [c:xyz
s:shard3 r:core_node5 x:xyz_shard3_replica1]
o.a.h.i.c.PoolingClientConnectionManager Connection leased: [id: 17][route:
{s}->https://127.0.1.1:8983][total kept alive: 0; route allocated: 5 of 100000;
total allocated: 5 of 100000]
...
2016-07-12 13:25:05.791 DEBUG
(recoveryExecutor-3-thread-4-processing-n:127.0.1.1:8984_solr
x:xyz_shard1_replica1 s:shard1 c:xyz r:core_node2) [c:xyz s:shard1 r:core_node2
x:xyz_shard1_replica1] o.a.h.i.c.PoolingClientConnectionManager Connection
released: [id: 17][route: {s}->https://127.0.1.1:8983][total kept alive: 8;
route allocated: 8 of 100000; total allocated: 8 of 100000]
{code}
The attached SOLR-9290-debug.patch applies to 5.3.x and changes HttpSolrClient
to log the connection details including the client port number for each request.
> 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, 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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