The quantity of small desk rows for any match in vector map join hash tables where we make use of the recurring subject optimization in overflow vectorized row batch for be part of queries using MapJoin. A worth of -one signifies do use the sign up for outcome optimization. In any other case, threshold price may be 0 to utmost integer.
Allow for JDO question pushdown for integral partition columns in metastore. Off by default. This enhances metastore general performance for integral columns, especially if you will find numerous partitions.
This flag ought to be established to correct to empower vectorized manner in the minimize-facet GROUP BY query execution. The default benefit is real.
In Hive 0.thirteen.0 and afterwards, if hive.stats.reputable is fake and statistics could not be computed effectively, the Procedure can even now do well and update the statistics but it surely sets a partition residence "areStatsAccurate" to Wrong. If the application desires precise statistics, they could then be acquired from the history.
The maximum size of your question string to keep from the lock. The default benefit is 1000000, Considering that the information limit of a visit the site znode is 1MB
A summary of comma separated values similar to YARN queues of the identical name. When HiveServer2 is introduced in Tez manner, this configuration ought to be set for many Tez sessions to operate in parallel over the cluster.
Other factors may well contain your academic level and the complexity with the job. Yet, we try to finish every single assignment as promptly as feasible.
Utmost number of bytes a script is allowed to emit to straightforward error (per map-minimize endeavor). This prevents runaway scripts from filling logs partitions to potential.
The most data dimension for your dimension table that generates partition pruning info. If reaches this Restrict, the optimization will probably be turned off.
Quantity of entries added to your Team BY aggregation hash just before a recomputation of common entry size is done.
Identify if we get yourself a skew key read more in be a part of. If we see greater than the desired amount of rows Using the exact crucial in sign up for operator, we think The crucial element why not check here as being a skew be a part of essential.
Utilizing this regex as an alternative to updating the first regex for hive.stability.authorization.sqlstd.confwhitelist indicates which you can append to your default that may be set by SQL regular authorization as an alternative to changing it totally.
Set this to your optimum amount of threads that Hive will use to list file details from file techniques, such as file measurement and amount of files per table (suggested > one for blobstore).
Whether or not to insert into multilevel nested directories like "insert Listing '/HIVEFT25686/chinna/' from table".