The utmost memory to be used for hash in RS operator for best K collection. The default value "-1" suggests no limit.
Amount of entries additional towards the Team BY aggregation hash in advance of a recomputation of regular entry sizing is executed.
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No matter whether Hive should periodically update endeavor progress counters for the duration of execution. Enabling This permits process progress to get monitored a lot more carefully in The task tracker, but may perhaps impose a overall performance penalty.
Whether to check, transform, and normalize partition worth specified in partition specification to conform to your partition column style.
The key distinction between this paramater and hive.improve.skewjoin is that this parameter works by using the skew details stored from the metastore to enhance the plan at compile time alone. If there isn't any skew details inside the metadata, this parameter will never have any result.
The most memory to be used by map-aspect team aggregation hash table. In case the why not check here memory usage is higher than this number, pressure to flush info.
Maximum number of bytes a script is permitted to emit to plain error (for every map-cut down undertaking). This stops runaway scripts from filling logs partitions helpful site to capacity.
Location this assets to legitimate will have HiveServer2 execute Hive functions as being the consumer producing the calls to it.
Adjustment to mapjoin hashtable dimension derived from desk and column statistics; the estimate of the number of keys is split by this benefit. If the value is 0, statistics are not utilized and hive.hashtable.initialCapacity is made use of in its place.
Time and then transactions are declared aborted In case the shopper has not sent a heartbeat, in seconds.
Greatest number of reducers that can be used. If the one specified in the configuration assets mapred.lessen.jobs is destructive, Hive will use this as the maximum variety of reducers when instantly deciding the number of reducers.
To operate the MSCK Repair service Desk command batch-clever. When there is numerous untracked partitions, by configuring a price to the house it can execute in batches internally. The default worth of the house click for more is zero, meaning it is going to execute the many partitions directly.
No matter if Hive supports concurrency or not. A ZooKeeper occasion should be up and managing for the default Hive lock manager to help examine-write locks.