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ZooKeeper provides reliable and timely coordination of processes. Given the many cluster resources leveraged by distributed ZooKeeper, it's frequently the first to notice issues affecting cluster health, which explains its moniker, "the canary in the Hadoop coal mine." Attend this session and learn (1) how to configure ZooKeeper reliably, (2) how to monitor ZooKeeper closely, and (3) how to resolve ZooKeeper errors efficiently. Culling from the diverse environments we've supported, we'll share what it takes to set up an impenetrable ZooKeeper environment, what specifically to monitor, and which ZooKeeper errors indicate something amiss with your hardware, network, or HBase configuration.
As a Customer Operations Engineer at Cloudera, Kathleen Ting stays up to keep your Hadoop production cluster up. Within the Hadoop platform, her focus is on Sqoop, Flume, ZooKeeper, and MapReduce. She is a committer on the Apache Sqoop project.