Category Archives: ZooKeeper

Apache ZooKeeper 3.4.4 Has Been Released!

Categories: ZooKeeper

Apache ZooKeeper release 3.4.4 is now available. This is a bug fix release covering 50 issues, four of which were considered blockers. Some of the more serious issues include:

  • ZOOKEEPER-1419 Leader election never settles for a 5-node cluster
  • ZOOKEEPER-1489 Data loss after truncate on transaction log
  • ZOOKEEPER-1466 QuorumCnxManager.shutdown missing synchronization
  • ZOOKEEPER-1412 java client watches inconsistently triggered on reconnect
  • ZOOKEEPER-1427 Writing to local files is done non-atomically
  • ZOOKEEPER-1465 Cluster availability following new leader election takes a long time with large datasets –

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Community Meetups at Strata + Hadoop World 2012

Categories: Cloudera Manager Community General Hadoop HBase Hive Sqoop ZooKeeper

Strata Conference + Hadoop World (Oct. 23-25 in New York City) is a bonanza for Hadoop and big data enthusiasts – but not only because of the technical sessions and tutorials. It’s also an important gathering place for the developer community, most of whom are eager to share info from their experiences in the “trenches”.

Just to make that process easier, Cloudera is teaming up with local meetups during that week to organize a series of meetings on a variety of topics.

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CDH3 update 5 is now available

Categories: Avro CDH Community Flume General Hadoop HBase HDFS Hive MapReduce Oozie Pig Sqoop ZooKeeper

We are happy to announce the general availability of CDH3 update 5. This update is a maintenance release of CDH3 platform and provides a considerable amount of bug-fixes and stability enhancements. Alongside these fixes, we have also included a few new features, most notable of which are the following:

  • Apache Flume 1.2.0 – Provides a durable file channel and many more features over the previous release.
  • Hive AvroSerDe – Replaces the Haivvreo SerDe and provides robust support for Avro data format.

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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

Stability, Read More