Jessica Cheng Mallet created SOLR-7694:
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Summary: Allow setting an overall client request timeout that
includes retries
Key: SOLR-7694
URL: https://issues.apache.org/jira/browse/SOLR-7694
Project: Solr
Issue Type: Improvement
Components: SolrJ
Reporter: Jessica Cheng Mallet
Current we're able to set a socket timeout on the underlying httpClient of an
LBHttpSolrServer (used by CloudSolrServer). However, this timeout only applies
to a single request that's issued from LBHttpSolrServer, but LBHttpSolrServer
will go on to try all eligible candidate servers when a SocketTimeoutException
is thrown, so that potentially the request can in fact take (socketTimeout *
number of eligible servers) time to return from the caller's perspective. This
is hard to predict.
We should allow setting an overall client request timeout apart from the single
request socketTimeout, so that the request call is guaranteed terminate by this
timeout (either via success or via a timeout exception). This allows the client
application to properly size their timeout and request thread pools to avoid
request thread exhaustion if solr is experiencing issues.
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