Niels Basjes created AVRO-3713:
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Summary: Regression AVRO-1760 : Thread scalability problem with
the use of SynchronizedMap
Key: AVRO-3713
URL: https://issues.apache.org/jira/browse/AVRO-3713
Project: Apache Avro
Issue Type: Bug
Reporter: Niels Basjes
This is a regression of AVRO-1760 which is causing production performance
problems.
In AVRO-1760 the issue was fixed that there is a scalability problem with AVRO
being used in multithreaded situations.
The solution that was implemented for this ticket uses a different Map
implementation (part of Guava) that does not have these locking issues:
[https://github.com/apache/avro/commit/363360229e7ea5f816d87f9d5747dd4494d3b862#diff-422f44890f5e0ab1f508a7c75d0d18fc7831a1c3ca13e0c97780617570c50d5cL970-L973]
Investigating the performance of our internal application has made us conclude
the original problem was reintroduced with this commit:
[https://github.com/apache/avro/commit/c78a3d5ea4e7e511ba9f6182157956db3e65e1a0#diff-422f44890f5e0ab1f508a7c75d0d18fc7831a1c3ca13e0c97780617570c50d5cL986-L988]
which seems to be related to this jira AVRO-2265 "Remove Guava as a dependency".
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