Q. A ___________ server is a machine that keeps a copy of the state of the entire system and persists this information in local log files.

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Q. ZooKeeper’s architecture supports high ____________ through redundant services.

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Q. _________ serves distributed Lucene indexes in a grid environment.

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Q. The Email & Apps team of ___________ uses ZooKeeper to coordinate sharding and responsibility changes in a distributed email client.

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Q. ZooKeeper is used for configuration, leader election in Cloud edition of ______________

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Q. Helprace is using ZooKeeper on a _______ cluster in conjunction with Hadoop and HBase.

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Q. The ZooKeeper Data Directory contains files which are _________ copy of the znodes stored by a particular serving ensemble.

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Q. You need to have _________ installed before running ZooKeeper.

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Q. How many types of special znodes are present in Zookeeper?

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Q. To register a “watch” on a znode data, you need to use the _______ commands to access the current content or metadata.

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Q. _______ has a design policy of using ZooKeeper only for transient data.

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Q. Zookeeper keep track of the cluster state such as the ______ table location.

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Q. The ________ master will register its own address in this znode at startup, making this znode the source of truth for identifying which server is the Master.

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Q. ___________ is used to decommission more than one RegionServer at a time by creating sub-znodes.

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Q. The ______ znode is used for synchronizing the changes made to the _acl_ table by the grant/revoke commands.

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Q. BigDecimal is comprised of a ________ with an integer ‘scale’ field.

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Q. ClobRef is a wrapper that holds a CLOB either directly or a reference to a file that holds the ______ data.

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Q. __________ encapsulates a set of delimiters used to encode a record.

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Q. _________ supports null values for all types.

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Q. Which of the following is a singleton instance class?

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