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Showing posts from June, 2012

Using the Apache Flume HBase Sink: How the Integration Works and How to Configure It

The first Apache Flume HBase sink introduced a simple way to stream events directly into HBase tables. This modernized walkthrough explains how the sink works, what its limitations are, how Flume resolves HBase configuration files, and how to set up a minimal but functional Flume-to-HBase pipeline. Although this feature originated in early Flume versions, many legacy Hadoop deployments still rely on it today. Overview The HBase sink was added to the Flume trunk and provided direct write support from Flume channels into HBase tables. It relies on synchronous HBase client operations and requires that HBase table metadata already exists. The sink handles flushes, transactions and rollbacks, allowing Flume to treat HBase as a durable storage target. Building Flume from Trunk In early versions the HBase sink was only available in the trunk source. The following sequence checks out Flume and builds it using Maven: git clone git://git.apache.org/flume.git cd flume git checkout tr...