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https://issues.apache.org/jira/browse/HTTPCORE-735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17693750#comment-17693750
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qxo commented on HTTPCORE-735:
------------------------------
[~olegk] My code is just sample code to reproduce the issue!!!
The httpclient connection pool may be closed unexpectedly and unrecoverable,
and the application can only be restarted！！！
> "Connection pool shut down" unreasonable
> ----------------------------------------
>
> Key: HTTPCORE-735
> URL: https://issues.apache.org/jira/browse/HTTPCORE-735
> Project: HttpComponents HttpCore
> Issue Type: Bug
> Components: HttpCore
> Reporter: qxo
> Priority: Major
>
> Why shutdown Connection pool if has a Error ?
> This is very unreasonable, one application shares the same httpclient,
> and a problem with one call will make the entire application unusable.
> Not robust enough!!!
> demo code:
> https://github.com/qxo/httpclient-shutdown-demo/blob/main/src/main/java/demo/HttpClientStackOverflowErrorShutdownDemo.java
> {code:java}
> 21:54:21.921 [main] INFO d.HttpClientStackOverflowErrorShutdownDemo -
> ==============================>invokeCount1: 1330
> 21:54:21.921 [main] ERROR d.HttpClientStackOverflowErrorShutdownDemo -
> java.lang.StackOverflowError
> 21:54:21.921 [main] INFO d.HttpClientStackOverflowErrorShutdownDemo -
> ==============================>invokeCount2: 1330
> Exception in thread "main" java.lang.IllegalStateException: Connection pool
> shut down
> at org.apache.http.util.Asserts.check(Asserts.java:34)
> at org.apache.http.pool.AbstractConnPool.lease(AbstractConnPool.java:191)
> at
> org.apache.http.impl.conn.PoolingHttpClientConnectionManager.requestConnection(PoolingHttpClientConnectionManager.java:267)
> at
> org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:176)
> at
> org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
> at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
> at
> org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
> at
> org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
> at
> org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
> at
> org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
> at
> demo.HttpClientStackOverflowErrorShutdownDemo.doGet(HttpClientStackOverflowErrorShutdownDemo.java:80)
> at
> demo.HttpClientStackOverflowErrorShutdownDemo.doLoopGet(HttpClientStackOverflowErrorShutdownDemo.java:65)
> at
> demo.HttpClientStackOverflowErrorShutdownDemo.main(HttpClientStackOverflowErrorShutdownDemo.java:51)
> {code}
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