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https://issues.apache.org/jira/browse/HBASE-9050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13722017#comment-13722017
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stack commented on HBASE-9050:
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[~jxiang] Yes
> HBaseClient#call could hang
> ---------------------------
>
> Key: HBASE-9050
> URL: https://issues.apache.org/jira/browse/HBASE-9050
> Project: HBase
> Issue Type: Bug
> Components: Client
> Affects Versions: 0.94.10
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Priority: Minor
> Attachments: 0.94-9050.patch
>
>
> In HBaseClient#call, we have
> {code}
> connection.sendParam(call); // send the parameter
> boolean interrupted = false;
> //noinspection SynchronizationOnLocalVariableOrMethodParameter
> synchronized (call) {
> while (!call.done) {
> try {
> call.wait(); // wait for the result
> {code}
> sendParam could do nothing if the connection is closed right after the call
> is added into the queue. Since the connection is closed, we won't get any
> response, therefore, we won't get any notify call. So we will keep waiting
> here for something won't happen.
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