You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by zh...@apache.org on 2018/04/23 08:12:04 UTC
[13/50] [abbrv] hbase git commit: HBASE-20454 [DOC] Add note on perf
to upgrade section Signed-off-by: Mike Drob
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/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 <st...@apache.org>
Authored: Thu Apr 19 13:14:12 2018 -0700
Committer: Michael Stack <st...@apache.org>
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
////