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Here you will get the job updates related to Hadoop Technology, in JOBS , also it is
recommended to follow in LinkedIn . I suggest you to update your jobs in hadoop by following this page hadoop jobs in facebook.

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Introduction to HDFS Erasure Coding in Apache Hadoop

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Thanks to blog contributors from Cloudera Erasure coding, a new feature in HDFS, can reduce storage overhead by approximately 50% compared to replication while maintaining the same durability guarantees. This post explains how it works. HDFS by default replicates each block three times. Replication provides a simple and robust form of redundancy to shield against most failure scenarios. It also eases scheduling compute tasks on locally stored data blocks by providing multiple replicas of each block to choose from. However, replication is expensive: the default 3x replication scheme incurs a 200% overhead in storage space and other resources (e.g., network bandwidth when writing the data). For datasets with relatively low I/O activity, the additional block replicas are rarely accessed during normal operations, but still consume the same amount of storage space. Therefore, a natural improvement is to use erasure coding (EC) in place of replication, which uses far less storage s...
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Thanks to Carter Shanklin & Nita Dembla from Hortonworks for valuable post. One of the most exciting new features of HDP 2.6 from Hortonworks was the general availability of Apache Hive with LLAP. If you missed DataWorks Summit you’ll want to look at some of the great LLAP experiences our users shared, including Geisinger who found that  Hive LLAP outperforms their traditional EDW  for most of their queries, and Comcast who found  Hive LLAP is faster than Presto for 75% of benchmark queries . These great results are thanks to performance and stability improvements Hortonworks made to Hive LLAP resulting in 3x faster interactive query in HDP 2.6. This blog dives into the reasons HDP 2.6 is so much faster. We’ll also take a look at the massive step forward Hive has made in SQL compliance with HDP 2.6, enabling Hive to run all 99 TPC-DS queries with only trivial modifications to the original source queries. STARTING OFF: 3X PERFORMANCE GAINS IN HDP 2.6 WITH HIVE ...
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