[jira] [Reopened] (HDFS-15150) Introduce read write lock to Datanode

order to submit patches backporting the changes to branches 2.10 - 3.x > Introduce read write lock to Datanode > - > > Key: HDFS-15150 > URL: https://issues.apache.org/jira/browse/HDFS-15150 > Pr

Re: Introduce Read Write Lock to Datanode

Thanks for initiating this discussion here. I am +1 to the general approach proposed. With DN getting denser, this is necessary more than ever. On Tue, Feb 4, 2020 at 10:33 AM Stephen O'Donnell wrote: > I would like to reopen an old topic, which is to introduce a Read Write > lock to the datanod

Introduce Read Write Lock to Datanode

I would like to reopen an old topic, which is to introduce a Read Write lock to the datanode. In the current trunk, a RentrentLock is used, so it is always exclusive. However there are many code paths in the DN where an exclusive lock is not necessary and a read lock would suffice. We know the Re

[jira] [Created] (HDFS-15150) Introduce read write lock to Datanode

Stephen O'Donnell created HDFS-15150: Summary: Introduce read write lock to Datanode Key: HDFS-15150 URL: https://issues.apache.org/jira/browse/HDFS-15150 Project: Hadoop HDFS Issue