a7c6d25dc3
This is a revert of a revert, i.e. a reapplication of the HDFS-14483 patch. Original commit was missing the JIRA number. Revert "Revert "Backport HDFS-3246,HDFS-14111 ByteBuffer pread interface to branch-2.9"" This reverts commit b26ad8a4c38d27894bd42d3fba7abff80bd895f4.