Tag Archives: hadoop security

Hadoop Delegation Tokens Explained

Categories: CDH Hadoop HDFS Platform Security & Cybersecurity

Apache Hadoop’s security was designed and implemented around 2009, and has been stabilizing since then. However, due to a lack of documentation around this area, it’s hard to understand or debug when problems arise. Delegation tokens were designed and are widely used in the Hadoop ecosystem as an authentication method. This blog post introduces the concept of Hadoop Delegation Tokens in the context of Hadoop Distributed File System (HDFS) and Hadoop Key Management Server (KMS),

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Community Meetups at Strata + Hadoop World NYC 2015

Categories: Community Events

Strata + Hadoop World 2015 NYC is more than a daytime conference; it’s also a nighttime meetup experience. (Plus, there are a bunch of book signings.)

It won’t be long before we’re all in NYC for Strata + Hadoop World (Sept. 29-Oct. 1; if you haven’t registered yet, a 20% discount is still available). So, consider for your evening agenda:

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Converting Apache Avro Data to Parquet Format in Apache Hadoop

Categories: Avro Guest Hadoop Parquet

Thanks to Big Data Solutions Architect Matthieu Lieber for allowing us to republish the post below.

A customer of mine wants to take advantage of both worlds: work with his existing Apache Avro data, with all of the advantages that it confers, but take advantage of the predicate push-down features that Parquet provides. How to reconcile the two?

For more information about combining these formats,

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Where to Find Cloudera Tech Talks (through March 2015)

Categories: Community Events

Find Cloudera tech talks in Austin, London, Washington DC, Zurich, and other cities through March 2015.

Below please find our regularly scheduled quarterly update about where to find tech talks by Cloudera employees—this time, through the first quarter of calendar year 2015. Note that this list will be continually curated during the period; complete logistical information may not be available yet. And remember, many of these talks are in “free” venues (no cost of entry).

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This Month in the Ecosystem (September 2014)

Categories: Community

Welcome to our 13th edition of “This Month in the Ecosystem,” a digest of highlights from September 2014 (never intended to be comprehensive; for that, see the excellent Hadoop Weekly).

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