Tim Armstrong has posted comments on this change. ( http://gerrit.cloudera.org:8080/14635 )
Change subject: IMPALA-8525: preads should use hdfsPreadFully rather than hdfsPread ...................................................................... Patch Set 2: (1 comment) http://gerrit.cloudera.org:8080/#/c/14635/2/be/src/runtime/io/hdfs-file-reader.cc File be/src/runtime/io/hdfs-file-reader.cc: http://gerrit.cloudera.org:8080/#/c/14635/2/be/src/runtime/io/hdfs-file-reader.cc@224 PS2, Line 224: if (FLAGS_use_hdfs_pread || IsS3APath(scan_range_->file_string()->c_str())) { > Oddly enough, none of this makes a significant difference for ABFS. I plan If you did perf testing for ABFS (even if it was basic/ad-hoc), can you mention it in the commit message. This is really useful info. -- To view, visit http://gerrit.cloudera.org:8080/14635 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I29ea34897096bc790abdeb98073a47f1c4c10feb Gerrit-Change-Number: 14635 Gerrit-PatchSet: 2 Gerrit-Owner: Sahil Takiar <stak...@cloudera.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Joe McDonnell <joemcdonn...@cloudera.com> Gerrit-Reviewer: Sahil Takiar <stak...@cloudera.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com> Gerrit-Comment-Date: Tue, 12 Nov 2019 16:05:55 +0000 Gerrit-HasComments: Yes
