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This flag ought to be set to true to permit vectorizing rows applying vector deserialize. The default value is false.

Range of entries included into the Team BY aggregation hash ahead of a recomputation of common entry sizing is carried out.

If your bucketing/sorting Houses with the table just match the grouping essential, no matter if to conduct the team by while in the mapper by utilizing BucketizedHiveInputFormat. The sole downside to this is the fact it limitations the quantity of mappers to the amount of information.

Quantity of aborted transactions involving a supplied desk or partition which will induce An important compaction.

When Fake, won't create a lock file and thus the cleardanglingscratchdir Instrument are not able to clear away any dangling scratch directories.

Time in seconds in between checks to check out if any tables or partitions should be compacted. This should be held superior mainly because Every single check for compaction involves several phone calls in opposition to the NameNode.

The utmost number of index entries to browse all through a question that makes use of the compact index. Detrimental value is comparable to infinity.

Utilized by LLAP daemon task scheduler metrics for time taken to eliminate activity (due to pre-emption) and practical time wasted via the job that's going to be preempted.

To operate the MSCK Maintenance TABLE command batch-clever. When there is a large number of untracked partitions, by configuring a worth towards the assets it is going to execute in batches internally. The default value of the house is zero, which means it can execute all of the partitions without delay.

No matter if to optimize multi team by query to make only one M/R work system. When the multi group by question has common group by keys, it will be optimized official source to make only one M/R work.

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No matter whether to enable TCP keepalive to the metastore server. Keepalive will protect against accumulation of 50 %-open up connections.

This flag needs to be applied to provide a comma separated list of totally competent classnames to exclude selected FileInputFormats from vectorized execution utilizing the vectorized file inputformat.

This selection implies how much memory the regional task usually takes to carry The true secret/benefit into an in-memory hash table when this map be a part of is accompanied by a gaggle by.