From f9a92376d8ff7523610de941aede9b1f97fb4ee6 Mon Sep 17 00:00:00 2001 From: Michael Stack Date: Thu, 19 Apr 2018 13:14:12 -0700 Subject: [PATCH] HBASE-20454 [DOC] Add note on perf to upgrade section --- src/main/asciidoc/_chapters/upgrading.adoc | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/main/asciidoc/_chapters/upgrading.adoc b/src/main/asciidoc/_chapters/upgrading.adoc index 67c5dbc902..17de7d6c71 100644 --- a/src/main/asciidoc/_chapters/upgrading.adoc +++ b/src/main/asciidoc/_chapters/upgrading.adoc @@ -553,6 +553,16 @@ 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.0.0. Be prepared +to spend time re-tuning (See <>). +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 //// -- 2.16.3