HBASE-20454 [DOC] Add note on perf to upgrade section Signed-off-by: Mike Drob <[email protected]>
Project: http://git-wip-us.apache.org/repos/asf/hbase/repo Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/7fc6e33b Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/7fc6e33b Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/7fc6e33b Branch: refs/heads/HBASE-19064 Commit: 7fc6e33be32b48912e94153327884b1112022e5f Parents: 556b223 Author: Michael Stack <[email protected]> Authored: Thu Apr 19 13:14:12 2018 -0700 Committer: Michael Stack <[email protected]> Committed: Thu Apr 19 13:21:22 2018 -0700 ---------------------------------------------------------------------- src/main/asciidoc/_chapters/upgrading.adoc | 11 +++++++++++ 1 file changed, 11 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hbase/blob/7fc6e33b/src/main/asciidoc/_chapters/upgrading.adoc ---------------------------------------------------------------------- diff --git a/src/main/asciidoc/_chapters/upgrading.adoc b/src/main/asciidoc/_chapters/upgrading.adoc index 046fc90..f7b101a 100644 --- a/src/main/asciidoc/_chapters/upgrading.adoc +++ b/src/main/asciidoc/_chapters/upgrading.adoc @@ -576,6 +576,17 @@ The internal changes to HBase during this upgrade were sufficient for compilatio If you previously relied on client side tracing integrated with HBase operations, it is recommended that you upgrade your usage to HTrace 4 as well. +[[upgrade2.0.perf]] +.Performance + +You will likely see a change in the performance profile on upgrade to hbase-2.0.0 given +read and write paths have undergone significant change. On release, writes may be +slower with reads about the same or much better, dependent on context. Be prepared +to spend time re-tuning (See <<performance>>). +Performance is also an area that is now under active review so look forward to +improvement in coming releases (See +link:https://issues.apache.org/jira/browse/HBASE-20188[HBASE-20188 TESTING Performance]). + //// This would be a good place to link to an appendix on migrating applications ////
