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https://reviews.apache.org/r/19459/
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Review request for zookeeper, fpj, michim, Raul Gutierrez Segales, and Camille 
Fournier.


Bugs: ZOOKEEPER-1502
    https://issues.apache.org/jira/browse/ZOOKEEPER-1502


Repository: zookeeper


Description
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Prevent multiple ZooKeeper servers are using the same data directories at same 
time.
Here trying to address the case where one ZK server JVM is running, what if 
another server mistakenly configured the the same data dir and starts.


Diffs
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  ./src/java/main/org/apache/zookeeper/server/ZKDatabase.java 1579527 
  ./src/java/main/org/apache/zookeeper/server/ZooKeeperServerMain.java 1579527 
  ./src/java/main/org/apache/zookeeper/server/persistence/FileTxnSnapLog.java 
1579527 
  ./src/java/test/org/apache/zookeeper/server/ZooKeeperServerMainTest.java 
1579527 
  ./src/java/test/org/apache/zookeeper/server/quorum/Zab1_0Test.java 1579527 

Diff: https://reviews.apache.org/r/19459/diff/


Testing
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standalone tests included, quorum test case to be added.


Thanks,

Rakesh R

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