Tak-Lon (Stephen) Wu created HBASE-26273: --------------------------------------------
Summary: TableSnapshotInputFormat/TableSnapshotInputFormatImpl should use ReadType.STREAM for scanning HFiles Key: HBASE-26273 URL: https://issues.apache.org/jira/browse/HBASE-26273 Project: HBase Issue Type: Improvement Components: mapreduce Affects Versions: 2.4.6, 3.0.0-alpha-1 Reporter: Tak-Lon (Stephen) Wu After the change in HBASE-17917 that use PREAD ({{ReadType.DEFAULT}}) for all user scan, the behavior of TableSnapshotInputFormat changed from STREAM to PREAD. TableSnapshotInputFormat is supposed to be use with a YARN/MR or other batch engine that should read the entire HFile in the container/executor, with default always to PREAD, the number of connection to HDFS surges and has an side-effect on the overall performance. The goal of this change is to make any downstream using TableSnapshotInputFormat with STREAM scan. -- This message was sent by Atlassian Jira (v8.3.4#803005)