Author: stack
Date: Sun Nov 22 23:39:18 2009
New Revision: 883190
URL: http://svn.apache.org/viewvc?rev=883190&view=rev
Log:
HBASE-1997 zk tick time bounds maximum zk session time
Modified:
hadoop/hbase/trunk/CHANGES.txt
hadoop/hbase/trunk/conf/hbase-default.xml
Modified: hadoop/hbase/trunk/CHANGES.txt
URL:
http://svn.apache.org/viewvc/hadoop/hbase/trunk/CHANGES.txt?rev=883190&r1=883189&r2=883190&view=diff
==============================================================================
--- hadoop/hbase/trunk/CHANGES.txt (original)
+++ hadoop/hbase/trunk/CHANGES.txt Sun Nov 22 23:39:18 2009
@@ -116,6 +116,7 @@
Purtell)
HBASE-1999 When HTable goes away, close zk session in shutdown hook or
something...
+ HBASE-1997 zk tick time bounds maximum zk session time
IMPROVEMENTS
HBASE-1760 Cleanup TODOs in HTable
Modified: hadoop/hbase/trunk/conf/hbase-default.xml
URL:
http://svn.apache.org/viewvc/hadoop/hbase/trunk/conf/hbase-default.xml?rev=883190&r1=883189&r2=883190&view=diff
==============================================================================
--- hadoop/hbase/trunk/conf/hbase-default.xml (original)
+++ hadoop/hbase/trunk/conf/hbase-default.xml Sun Nov 22 23:39:18 2009
@@ -386,10 +386,15 @@
<property>
<name>zookeeper.session.timeout</name>
<value>60000</value>
- <description>ZooKeeper session timeout. This option is not used by HBase
- directly, it is for the internals of ZooKeeper. HBase merely passes it in
- whenever a connection is established to ZooKeeper. It is used by
ZooKeeper
- for hearbeats. In milliseconds.
+ <description>ZooKeeper session timeout.
+ HBase passes this to the zk quorum as suggested maximum time for a
+ session. See
http://hadoop.apache.org/zookeeper/docs/current/zookeeperProgrammers.html#ch_zkSessions
+ "The client sends a requested timeout, the server responds with the
+ timeout that it can give the client. The current implementation
+ requires that the timeout be a minimum of 2 times the tickTime
+ (as set in the server configuration) and a maximum of 20 times
+ the tickTime." Set the zk ticktime with
hbase.zookeeper.property.tickTime.
+ In milliseconds.
</description>
</property>
<property>
@@ -472,9 +477,10 @@
-->
<property>
<name>hbase.zookeeper.property.tickTime</name>
- <value>2000</value>
+ <value>3000</value>
<description>Property from ZooKeeper's config zoo.cfg.
- The number of milliseconds of each tick.
+ The number of milliseconds of each tick. See
+ zookeeper.session.timeout description.
</description>
</property>
<property>
