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https://issues.apache.org/jira/browse/HBASE-2841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12889430#action_12889430
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Nicolas Spiegelberg commented on HBASE-2841:
--------------------------------------------
For developer...
psuedo-distributed ZK is more work than the others based upon the way that
ZooKeeperWrapper & HQuorumPeer was written. Should still be doable, but noting
some of the problems for consideration:
1. Need to add conf item (hbase.zookeeper.myid) to override ID lookup in
HQuorumPeer.writeMyID()
2. These config params should be different per HQuorumPeer:
hbase.zookeeper.property.clientPort + hbase.zookeeper.property.dataDir
3. hbase.zookeeper.property.server.<id> should be given to hbase as
<addr>:<peer_port>:<leader_port>:<client_port>
a. We currently don't allow a custom peer_port + leader_port even though ZK
supports it
b. Need extra client_port for ZooKeeperWrapper.setQuorumServers()
4. GNU Parsing code needs to be added to HQuorumPeer to support overriding
config values on the fly. See HMaster.doMain() for help
Also, make sure that the master rewrite code does not affect this change, if
you finish first.
> Support psuedo-distributed ZooKeeper in HBase
> ---------------------------------------------
>
> Key: HBASE-2841
> URL: https://issues.apache.org/jira/browse/HBASE-2841
> Project: HBase
> Issue Type: Improvement
> Components: scripts, zookeeper
> Reporter: Nicolas Spiegelberg
> Priority: Trivial
>
> HBASE-1511 added psuedo-distributed support for RegionServers and backup
> Masters, however there were some obstacles preventing the last piece:
> psuedo-distributed ZooKeeper clients (HQuorumPeer). No major obstacles, just
> enough that I don't have time to work on them immediately. This would be a
> great noob task to get familiar with how our ZooKeeper code works and make
> minor changes that will greatly help us test this product. Note that if
> you're feeling extra ambitious, you could work on adding startZkCluster(int),
> killZkPeer(int), and restartZkPeer(int) to HBaseTestingUtility.java for JUnit
> test goodness.
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