Dear hdfs-dev: stakiar has been working on this issue: https://issues.apache.org/jira/browse/HDFS-3246, but he has no permission to attach his patch and run hadoop QA.
And I'm working on HBASE-21879, which depends on the ByteBuffer pread interface, and I think it'll be an great p999-latency improvement for 100% get/scan case in HBase. Could anyone help to grant the JIRA contributor permission to us ? so we can move this task as faster as possible :-) Our JIRA id are: stakiar / openinx Thanks.