41. A . . . . . . . . server is a machine that keeps a copy of the state of the entire system and persists this information in local log files.
42. The type of . . . . . . . . strategy Cassandra performs on your data is configurable and can significantly affect read performance.
43. ZooKeeper allows distributed processes to coordinate with each other through registers, known as . . . . . . . .
44. User accounts may be altered and dropped using the . . . . . . . . Query Language.
45. BigDecimal is comprised of a . . . . . . . . with an integer 'scale' field.
46. Helprace is using ZooKeeper on a . . . . . . . . cluster in conjunction with Hadoop and HBase.
47. . . . . . . . . does not support the notion of enclosing characters that may include field delimiters in the enclosed string.
48. Cassandra creates a . . . . . . . . for each table, which allows you to symlink a table to a chosen physical drive or data volume.
49. . . . . . . . . is used to decommission more than one RegionServer at a time by creating sub-znodes.
50. . . . . . . . . is a Cassandra feature that optimizes the cluster consistency process.
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