Accurate: Verify that Edition facts saved in metastore matches with one particular from Hive jars. Also disable automated schema migration endeavor (see datanucleus.
A constructive integer that establishes the number of Tez sessions that should be introduced on Each individual from the queues specified by hive.server2.tez.default.queues. Determines the parallelism on Every queue.
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No matter if Hive must periodically update activity progress counters through execution. Enabling This enables activity development to be monitored additional intently in The work tracker, but might impose a performance penalty.
This flag ought to be established to true to empower vectorizing rows making use of vector deserialize. The default benefit is false.
If That is set to genuine, mapjoin optimization in Hive/Spark will use supply file dimensions affiliated with the TableScan operator on the foundation of your operator tree, as opposed to working with operator statistics.
To scrub up the Hive scratch directory whilst starting off the Hive server (or HiveServer2). This is not an selection for a multi-consumer ecosystem since it will accidentally clear away the scratch Listing in use.
The privileges mechanically granted to the proprietor whenever a desk receives created. An example like "pick,fall" will grant pick out and drop privilege to the operator in the desk. Take note which the default presents the creator of a table no usage of the table.
To shield the cluster, this controls what number of partitions can be scanned for each partitioned desk. The default value "-one" suggests no Restrict. The limit on partitions will not have an impact on metadata-only queries.
Whether the Variation of Hadoop which happens to be running supports sub-directories for tables/partitions. Numerous Hive optimizations may be utilized In the event the Hadoop version supports sub-directories for tables/partitions. This aid was extra by MAPREDUCE-1501.
Session is going to be shut when connection is shut. Established this to Bogus to possess session outlive its mum or dad relationship.
The utmost memory in bytes which the cached objects can use. Memory employed is calculated dependant on believed sizing of tables and partitions inside the cache. Location it into a detrimental price disables memory visit this website estimation.
This flag really should be applied to offer a comma separated listing of absolutely capable classnames to exclude particular FileInputFormats from vectorized execution utilizing the vectorized file inputformat.
Determines the amount of compaction information in state 'did not initiate' will be retained in compaction history to get a provided table/partition.