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Posted to commits@cassandra.apache.org by ja...@apache.org on 2015/07/31 22:08:59 UTC
cassandra git commit: Add a note about new JVM settings for 3.0 in
NEWS.TXT
Repository: cassandra
Updated Branches:
refs/heads/trunk 1774eb9a8 -> 43139f866
Add a note about new JVM settings for 3.0 in NEWS.TXT
patch by tjake; reviewed by jbellis for CASSANDRA-9483
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/43139f86
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/43139f86
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/43139f86
Branch: refs/heads/trunk
Commit: 43139f8668e0a524035507efc619cd0e0f06cea9
Parents: 1774eb9
Author: T Jake Luciani <ja...@apache.org>
Authored: Fri Jul 31 16:07:28 2015 -0400
Committer: T Jake Luciani <ja...@apache.org>
Committed: Fri Jul 31 16:08:50 2015 -0400
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NEWS.txt | 6 ++++++
1 file changed, 6 insertions(+)
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http://git-wip-us.apache.org/repos/asf/cassandra/blob/43139f86/NEWS.txt
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diff --git a/NEWS.txt b/NEWS.txt
index 392a581..0e0d7c4 100644
--- a/NEWS.txt
+++ b/NEWS.txt
@@ -23,9 +23,15 @@ New features
for non-primary key queries, and perform much better for indexing high
cardinality columns.
See http://www.datastax.com/dev/blog/new-in-cassandra-3-0-materialized-views
+
Upgrading
---------
+ - 3.0 requires Java 8u20 or later.
+ - The default JVM GC has been changed to G1GC.
+ - The default JVM flag -XX:+PerfDisableSharedMem will cause the following tools JVM
+ to stop working: jps, jstack, jinfo, jmc, jcmd as well as 3rd party tools like Jolokia.
+ If you wish to use these tools you can comment this flag out in cassandra-env.{sh,ps1}
- New write stages have been added for batchlog and materialized view mutations
you can set their size in cassandra.yaml
- User defined functions are now executed in a sandbox.