Tag Archives: release

Apache ZooKeeper 3.5.3-beta Has Been Released

Categories: ZooKeeper

The Apache ZooKeeper team has announced that Apache ZooKeeper release 3.5.3-beta is now available! This release is the first beta release of the 3.5 series, which cover 77 issues, thirteen of which were considered blockers. Here are some highlights:

New Feature

  • ZOOKEEPER-2719 Enable creation of TTL nodes, which are znode that’s not tied to a session and will get cleaned up automatically once expired.

Security Fixes

  • ZOOKEEPER-2014 Only admin roles should be allowed to reconfigure a cluster
  • ZOOKEEPER-2693 Prevent DOS attack on wchp/wchc four letter words (4lw)

Critical Bug Fixes

  • ZOOKEEPER-2383 Solve startup race in ZooKeeperServer
  • ZOOKEEPER-2172 Cluster crashes when reconfig a new node as a participant
  • ZOOKEEPER-2737 NettyServerCnxFactory leaks connection if exception happens while writing to a channel
  • ZOOKEEPER-2247 Zookeeper service becomes unavailable when leader fails to write transaction log
  • ZOOKEEPER-2080 Fix deadlock in dynamic reconfiguration
  • ZOOKEEPER-2687 Deadlock while shutting down the Leader server

Stability,

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Apache Hadoop 3.0.0-alpha2 Released

Categories: Community Hadoop

The Apache Hadoop project announced the release of 3.0.0-alpha2 on January 25th, 2017. This is the second alpha release in the 3.0.0 release series leading up to 3.0.0 GA, and incorporates 857 new fixes, improvements, and features since 3.0.0-alpha1 last September. It’s worth reading our previous blog post about 3.0.0-alpha1; in this post, we’ll discuss the new improvements that landed in alpha2.

Classpath Isolation for Hadoop Client Jars

The pain of classpath isolation has been experienced by many Java developers.

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Up and running with Apache Spark on Apache Kudu

Categories: CDH Data Ingestion Data Science General Hadoop How-to Impala Kudu Spark Training Use Case

After the GA of Apache Kudu in Cloudera CDH 5.10, we take a look at the Apache Spark on Kudu integration, share code snippets, and explain how to get up and running quickly, as Kudu is already a first-class citizen in Spark’s ecosystem.

 

As the Apache Kudu development team celebrates the initial 1.0 release launched on September 19, and the most recent 1.2.0 version now GA as part of Cloudera’s CDH 5.10 release,

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New in Cloudera Enterprise 5.5: Support for Complex Types in Impala

Categories: Impala Parquet

The new support for complex types in Impala makes running analytic workloads considerably simpler.

Impala 2.3 (shipping starting in Cloudera Enterprise 5.5) contains support for querying complex types in Apache Parquet tables, specifically ARRAY, MAP, and STRUCTs. This capability enables users to query against naturally nested data sets without having to perform ETL to flatten them. This feature provides a few major benefits, including:

  • It removes additional ETL and data modeling work to flatten data sets.

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