The maximum memory for use for hash in RS operator for prime K range. The default worth "-one" signifies no Restrict.
No matter whether to examine, change, and normalize partition benefit laid out in partition specification to conform on the partition column form.
When striving a smaller sized subset of knowledge for simple Restrict, how much dimensions we need to ensure each row to acquire at the very least.
This parameter is a global variable that enables numerous optimizations when managing on blobstores.
The DefaultHiveMetastoreAuthorizationProvider implements the regular Hive grant/revoke design. A storage-based mostly authorization implementation is also presented to make use of as the worth of the configuration home:
The key difference between this paramater and hive.improve.skewjoin is this parameter works by using the skew facts stored in the metastore to optimize the plan at compile time alone. If there is not any skew details during the metadata, this parameter is not going to have any effect.
With hive.server2.session.check.interval established to your positive time benefit, session will probably be shut when it's actually not accessed for this duration of time, which may be disabled by placing to zero or negative price.
Most number of bytes a script is allowed to emit to standard mistake (per map-cut down activity). This helps prevent runaway scripts from filling logs partitions to potential.
Sizing with the wait queue for async thread pool in HiveServer2. After hitting this Restrict, the async thread pool will reject new requests.
Sasl QOP benefit; established it to 1 of the next values to allow greater amounts of protection for HiveServer2 communication with clientele.
Whether or not to execute Positions look at this site in parallel. Relates to MapReduce jobs that will run in parallel, such as jobs processing various source tables prior to a be a part of. As of Hive 0.fourteen, also applies to transfer duties that will run in parallel, for instance shifting files to insert targets throughout multi-insert.
The number of compact table rows for just a match in vector map sign up for hash tables where by we utilize the repeated area optimization in overflow vectorized have a peek here row batch for join queries making use of MapJoin. A worth of -1 indicates do use the be part of consequence optimization. Normally, threshold price might be 0 to highest integer.
Makes required schema with a startup if a single would not exist. Set this to Bogus, after generating it at the time.
This variety means how much memory the area endeavor can take to carry The real key/price into an in-memory hash desk when this map be part of is followed by a group by.