Sasl QOP value; set it to 1 of the next values to permit greater amounts of safety for HiveServer2 communication with purchasers.
Besides the configuration Qualities mentioned Within this area, some Attributes in other sections are also associated with ORC:
If That is established to genuine, mapjoin optimization in Hive/Spark will use statistics from TableScan operators at the foundation of operator tree, rather than father or mother ReduceSink operators with the Be part of operator.
This parameter is a global variable that enables numerous optimizations when working on blobstores.
This flag should be established to genuine to empower vectorizing rows applying vector deserialize. The default benefit is false.
The principle distinction between this paramater and hive.optimize.skewjoin is this parameter utilizes the skew information stored within the metastore to enhance the strategy at compile time itself. If there is not any skew data within the metadata, this parameter will never have any result.
Whether column accesses are tracked inside the QueryPlan. This is helpful to detect how tables are accessed and to find out if there are wasted columns that could be trimmed.
For conditional joins, if enter stream from a little alias can be straight applied to the join operator without having filtering or projection, the alias need not be pre-staged within the visit this page distributed cache via a mapred nearby job. Presently, this is not working with vectorization or Tez execution do my spss assignment motor.
To operate the MSCK Restore TABLE command batch-sensible. If there is a large number of untracked partitions, by configuring a value to the residence it will eventually execute in batches internally. The default price of the assets is zero, which implies it will eventually execute all of the partitions directly.
No matter whether to enhance multi team by question to crank out only one M/R career approach. Should the multi team by query has popular group by keys, It will likely be optimized to create just one M/R occupation.
This flag should be made use of to offer a comma separated listing of totally capable classnames to exclude certain FileInputFormats from vectorized execution utilizing the vectorized file inputformat.
When false, would not produce a lock file and therefore the cleardanglingscratchdir Software are not able to eliminate any dangling scratch directories.
If the quantity of keys in a very dictionary is bigger YOURURL.com than this fraction of the entire quantity of non-null rows, change off dictionary encoding. Use 1 to always use dictionary encoding.
No matter if Hive supports concurrency or not. A ZooKeeper instance has to be up and running for your default Hive lock supervisor to aid go through-produce locks.