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https://issues.apache.org/jira/browse/ZOOKEEPER-1691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13845759#comment-13845759
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Bruno Freudensprung commented on ZOOKEEPER-1691:
------------------------------------------------
Hi,
I've just tested the patch on the trunk and unfortunately I didn't succeed to
perform an incremental reconfig (add 1 ZK node to a 2 ZK nodes cluster).
I have to say I made the test on Windows 7 with Oracle JDK 1.6.0_32 64-bit, so
I don't know if it is relevant.
Anyway you will find attached my test configuration and scenario. As I am a ZK
beginner (still very interested in the dynamic reconfig feature), maybe I did
something wrong.
During the process, I discovered the reconfig fails to rename the tmp dynamic
config file to the real dynamic config filename (javadoc of
java.io.File.renameTo says the behavior is highly plateform dependent, so I
guess this should not be a big surprise since I did the test on Windows).
That's why my test scenario ran after I modified
src/java/main/org/apache/zookeeper/server/quorum/QuorumPeerConfig.java like
this (after having applied the patch) :
+ curFile.delete();
if (!tmpFile.renameTo(curFile)) {
+ configFile.delete();
if (!tmpFile.renameTo(configFile)) {
I also discovered that, when clientPort=2183 and standaloneEnabled=false (this
one makes the difference) are omitted from the zoo.cfg of my server 3 (see my
test scenario), the server won't listen on the client port (tries to bind to
port "null"):
2013-12-11 22:48:08,227 [myid:] - INFO [main:NIOServerCnxnFactory@683] -
binding to port null
Bruno.
> Add a flag to disable standalone mode
> -------------------------------------
>
> Key: ZOOKEEPER-1691
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1691
> Project: ZooKeeper
> Issue Type: Improvement
> Components: quorum
> Reporter: Michi Mutsuzaki
> Assignee: Helen Hastings
> Fix For: 3.5.0
>
> Attachments: ZOOKEEPER-1691.patch, ZOOKEEPER-1691.patch,
> ZOOKEEPER-1691.patch, ZOOKEEPER-1691.patch, ZOOKEEPER-1691.patch,
> ZOOKEEPER-1691.patch
>
>
> Currently you cannot use dynamic reconfiguration to bootstrap zookeeper
> cluster because the server goes into standalone mode when there is only one
> server in the cluster.
> --Michi
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