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https://issues.apache.org/jira/browse/SOLR-2158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12966971#action_12966971
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Yonik Seeley commented on SOLR-2158:
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OK, so we upgraded jetty... but the "failed to respond" exception still happens.
Just to try and narrow things down, I put a long sleep inside solr request
handling and then tried a distributed search... it worked fine. So
it doesn't appear to be something getting hung up in Solr.
- a jetty bug
- an embedded jetty bug
- a HttpClient bug
- a bug in the way solr uses HttpClient
Another data point: with my load testing tool, I can run millions of requests
against Jetty/Solr (and I just did again). It doesn't use HttpClient though,
and it uses GET instead of POST.
Some things to try:
- Modify the load tool to use POST and verify things still work
- Put a long pause in TestDistributedSearch after the solr servers are brought
up, and then try load testing against those servers w/ an external tool.
- if this fails, we know it's an issue with how we embed Jetty
- Make a load testing tool that uses SolrJ exactly the way that distributed
search uses it, and try it on a normal Solr server
- if this fails, ti could be an HttpClient bug, or a jetty bug tickled by
HttpClient specifically
- if this fails, make a small self-contained load tool that uses only
HttpClient to remove the possibility of SolrJ bugs
> TestDistributedSearch.testDistribSearch fails often
> ---------------------------------------------------
>
> Key: SOLR-2158
> URL: https://issues.apache.org/jira/browse/SOLR-2158
> Project: Solr
> Issue Type: Bug
> Components: Build
> Affects Versions: 3.1, 4.0
> Environment: Hudson
> Reporter: Robert Muir
> Fix For: 3.1, 4.0
>
> Attachments: TEST-org.apache.solr.TestDistributedSearch.txt
>
>
> TestDistributedSearch.testDistribSearch fails often in hudson, with some
> threads throwing uncaught exceptions.
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