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https://issues.apache.org/jira/browse/HBASE-19319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Appy updated HBASE-19319:
-------------------------
Attachment: HBASE-19319.master.002.patch
> Fix bug in synchronizing over ProcedureEvent
> --------------------------------------------
>
> Key: HBASE-19319
> URL: https://issues.apache.org/jira/browse/HBASE-19319
> Project: HBase
> Issue Type: Bug
> Reporter: Appy
> Assignee: Appy
> Attachments: HBASE-19319.master.001.patch,
> HBASE-19319.master.002.patch
>
>
> Following synchronizes over local variable rather than the original
> ProcedureEvent object. Clearly a bug since this code block won't follow
> exclusion with many of the synchronized methods in ProcedureEvent class.
> {code}
> @Override
> public void wakeEvents(final int count, final ProcedureEvent... events) {
> final boolean traceEnabled = LOG.isTraceEnabled();
> schedLock();
> try {
> int waitingCount = 0;
> for (int i = 0; i < count; ++i) {
> final ProcedureEvent event = events[i];
> synchronized (event) {
> if (!event.isReady()) {
> {code}
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