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Posted to dev@thrift.apache.org by "Jonathan Pearlin (JIRA)" <ji...@apache.org> on 2017/03/22 22:54:41 UTC
[jira] [Created] (THRIFT-4130) Ensure Apache Http connection is
released back to pool after use
Jonathan Pearlin created THRIFT-4130:
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Summary: Ensure Apache Http connection is released back to pool after use
Key: THRIFT-4130
URL: https://issues.apache.org/jira/browse/THRIFT-4130
Project: Thrift
Issue Type: Improvement
Components: Java - Library
Affects Versions: 0.10.0, 0.9.3, 0.9.2, 0.9.1, 0.11.0, 0.12.0
Reporter: Jonathan Pearlin
There is a connection leak in the THttpClient when using the Apache HttpClient with the PoolingClientConnectionManager. Without calling releaseConnection on the HttpPost object, the connections are never returned to the pool. Under heavy load, this can lead to both failures for subsequent calls to be able to get a connection from the pool and connections being held by the underlying OS, eventually resulting in the inability to grab another client port for outgoing connections. Per the Apache HttpClient examples/documentation:
"In order to ensure correct deallocation of system resources
the user MUST either fully consume the response content or abort request
execution by calling HttpGet#releaseConnection()."
This might have not been an issue when using the 3.x version of the HttpClient, but it's definitely an issue in the 4.x line. See https://hc.apache.org/httpcomponents-client-4.2.x/quickstart.html for more details.
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