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https://issues.apache.org/jira/browse/HTTPCLIENT-2379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17993123#comment-17993123
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yhzdys commented on HTTPCLIENT-2379:
------------------------------------
I believe this is a serious issue, because once the IllegalStateException
occurs during execution, the IOReactor thread of the HttpClient instance will
be shut down. As a result, the HttpClient instance becomes completely
unavailable.
See:
https://github.com/apache/httpcomponents-core/blob/9e338c853630f1e02b66b033b3edd3c6cd10aa6d/httpcore5/src/main/java/org/apache/hc/core5/reactor/AbstractSingleCoreIOReactor.java#L103
> Multiple removal of same PoolEntry causes IllegalStateException in
> H2SharingConnPool
> ------------------------------------------------------------------------------------
>
> Key: HTTPCLIENT-2379
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2379
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient (async)
> Affects Versions: 5.5
> Reporter: yhzdys
> Priority: Major
> Fix For: 5.5.1, 5.6-alpha1
>
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> After enabling messageMultiplexing, the H2SharingConnPool is used to reuse
> PoolEntry.
> When making more than one request using the same connection, if the
> connection is closed,
> the pool.release(entry, reusable) method at H2SharingConnPool.java:183 will
> throw the following exception:
> ~~~java
> throw new IllegalStateException("Pool entry is not present in the set of
> leased entries");
> ~~~
> This occurs because the same connection is being removed multiple times.
> https://github.com/yhzdys/httpcomponents-client/commit/c8256b33c3adb45cfa2a49efb2dacfb611da9ac1
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