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https://issues.apache.org/jira/browse/ASTERIXDB-3346?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wail Y. Alkowaileet resolved ASTERIXDB-3346.
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Resolution: Fixed
> Race condition in GlobalResourceIdFactory
> -----------------------------------------
>
> Key: ASTERIXDB-3346
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-3346
> Project: Apache AsterixDB
> Issue Type: Bug
> Components: MTD - Metadata
> Affects Versions: 0.9.9
> Reporter: Wail Y. Alkowaileet
> Assignee: Wail Y. Alkowaileet
> Priority: Major
> Fix For: 0.9.9
>
>
> In
> [GlobalResourceIdFactory:|https://github.com/apache/asterixdb/blob/30d1fa121c926434504d7c3691338cd28bf5aa0e/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/transaction/GlobalResourceIdFactory.java#L41]
> {noformat}
> // if there already exists a response, use it
> ResourceIdRequestResponseMessage response =
> resourceIdResponseQ.poll();
> if (response == null) {
> requestNewBlock();
> response = resourceIdResponseQ.take();
> } {noformat}
> Two threads say (t1 and t2) can have a race condition:
> t1: do *requestNewBlock();*
> t2: poll the response of the request of t1 ({*}resourceIdResponseQ.poll(){*})
> t1: waits for the response in *resourceIdResponseQ.take()* indefinitely
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