Wail Y. Alkowaileet created ASTERIXDB-3346:
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Summary: 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
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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