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Posted to common-issues@hadoop.apache.org by GitBox <gi...@apache.org> on 2019/10/08 02:02:34 UTC
[GitHub] [hadoop] arp7 commented on issue #1589: HDDS-2244. Use new
ReadWrite lock in OzoneManager.
arp7 commented on issue #1589: HDDS-2244. Use new ReadWrite lock in OzoneManager.
URL: https://github.com/apache/hadoop/pull/1589#issuecomment-539279865
I looked through the JDK implementation of read-write locks a couple of years ago. Even in non-fair mode there is prevention against starvation. HDFS uses non-fair mode by default and works well even for very busy Name Nodes.
However we can make the lock fair for now, and evaluate making it non-fair later.
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