Author Archives: Patrick Hunt

Apache ZooKeeper 3.3.6 has been released

Categories: General ZooKeeper

Apache ZooKeeper release 3.3.6 is now available. This is a bug fix release covering 16 issues, two of which were considered blockers. Some of the more serious issues include:

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Apache ZooKeeper 3.3.5 has been released

Categories: General ZooKeeper

Apache ZooKeeper release 3.3.5 is now available. This is a bug fix release covering 11 issues, two of which were considered blockers. Some of the more serious issues include:

  • ZOOKEEPER-1367 Data inconsistencies and unexpired ephemeral nodes after cluster restart
  • ZOOKEEPER-1412 Java client watches inconsistently triggered on reconnect
  • ZOOKEEPER-1277 Servers stop serving when lower 32bits of zxid roll over
  • ZOOKEEPER-1309 Creating a new ZooKeeper client can leak file handles
  • ZOOKEEPER-1389 It would be nice if start-foreground used exec $JAVA in order to get rid of the intermediate shell process
  • ZOOKEEPER-1089 zkServer.sh status does not work due to invalid option of nc

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Apache ZooKeeper 3.4.3 has been released

Categories: General ZooKeeper

Apache ZooKeeper release 3.4.3 is now available. This is a bug fix release covering 18 issues, one of which was considered a blocker. 

ZooKeeper 3.4 is incorporated into CDH4 and now available in beta 1!

ZOOKEEPER-1367 is the most serious of the issues addressed, it could cause data corruption on restart. This version also adds support for compiling the client on ARM architectures.

  • ZOOKEEPER-1367  Data inconsistencies and unexpired ephemeral nodes after cluster restart
  • ZOOKEEPER-1343  getEpochToPropose should check if lastAcceptedEpoch is greater or equal than epoch
  • ZOOKEEPER-1373  Hardcoded SASL login context name clashes with Hadoop security configuration override
  • ZOOKEEPER-1089  zkServer.sh status does not work due to invalid option of nc
  • ZOOKEEPER-973    bind() could fail on Leader because it does not setReuseAddress on its ServerSocket
  • ZOOKEEPER-1374  C client multi-threaded test suite fails to compile on ARM architectures.

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Apache ZooKeeper 3.4.2 has been released

Categories: General ZooKeeper

Apache ZooKeeper release 3.4.2 is now available. This is a bug fix release covering 2 issues, one of which was considered a blocker.

ZOOKEEPER-1333 is the most serious of the issues addressed, it could cause a server to fail to rejoin the quorum on restart:

If you are running 3.4.1 or earlier be sure to upgrade immediately.

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Apache Whirr 0.7.0 has been released

Categories: Cloud General

Apache Whirr release 0.7.0 is now available. It includes changes covering over 50 issues, four of which were considered blockers. Whirr is a tool for quickly starting and managing clusters running on cloud services like Amazon EC2. This is the first Whirr release as a top level Apache project (previously releases were under the auspices of the Incubator). In addition to improving overall stability some of the highlights are described below:

Support for 

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