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Posted to commits@hbase.apache.org by st...@apache.org on 2018/04/19 20:20:53 UTC
hbase git commit: HBASE-20454 [DOC] Add note on perf to upgrade
section Signed-off-by: Mike Drob
Repository: hbase
Updated Branches:
refs/heads/branch-2.0 8ad6f576c -> 6ac28dbfb
HBASE-20454 [DOC] Add note on perf to upgrade section
Signed-off-by: Mike Drob <md...@apache.org>
Project: http://git-wip-us.apache.org/repos/asf/hbase/repo
Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/6ac28dbf
Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/6ac28dbf
Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/6ac28dbf
Branch: refs/heads/branch-2.0
Commit: 6ac28dbfbafa55299b79192281881a13776e4404
Parents: 8ad6f57
Author: Michael Stack <st...@apache.org>
Authored: Thu Apr 19 13:14:12 2018 -0700
Committer: Michael Stack <st...@apache.org>
Committed: Thu Apr 19 13:20:36 2018 -0700
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src/main/asciidoc/_chapters/upgrading.adoc | 11 +++++++++++
1 file changed, 11 insertions(+)
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http://git-wip-us.apache.org/repos/asf/hbase/blob/6ac28dbf/src/main/asciidoc/_chapters/upgrading.adoc
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diff --git a/src/main/asciidoc/_chapters/upgrading.adoc b/src/main/asciidoc/_chapters/upgrading.adoc
index 67c5dbc..a106627 100644
--- a/src/main/asciidoc/_chapters/upgrading.adoc
+++ b/src/main/asciidoc/_chapters/upgrading.adoc
@@ -553,6 +553,17 @@ 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
////