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From "Jay Kreps (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-191) Investigate removing the synchronization in Log.flush
Date Sun, 06 Nov 2011 02:30:51 GMT
Investigate removing the synchronization in Log.flush

                 Key: KAFKA-191
                 URL: https://issues.apache.org/jira/browse/KAFKA-191
             Project: Kafka
          Issue Type: New Feature
          Components: core
    Affects Versions: 0.8
            Reporter: Jay Kreps

Currently we have the following synchronization in Log.scala:
1. append, roll, and flush all share a write lock
2. read is non-blocking

Unfortunately this means that flush time latency is added to appends (even if the flush is
done by a background thread). To fix this we should investigate a scheme to make append and
flush not block each other.

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