The quantity of tiny desk rows for just a match in vector map join hash tables where by we utilize the repeated area optimization in overflow vectorized row batch for be a part of queries applying MapJoin. A price of -one means do make use of the be a part of consequence optimization. If not, threshold benefit is usually 0 to optimum integer.
No matter if a MapJoin hashtable need to deserialize values on demand from customers. Dependant upon how many values in the table the be a part of will actually touch, it may possibly help save a lot of memory by not making objects for rows that aren't desired. If all rows are necessary, of course there is no obtain.
Whether or not to set up break up areas to match nodes on which LLAP daemons are managing, as opposed to using the locations supplied by the break up itself.
Specifies a fully capable domain consumer to implement when binding to LDAP for authentication, in lieu of using the person itself. This enables for situations exactly where all people don't have lookup permissions on LDAP, alternatively demanding only the bind user to own search permissions.
The string that the regex might be matched against is of the next sort, wherever ex is really a SQLException:
Produces necessary schema on the startup if one particular would not exist. Established this to Phony, soon after building it when.
With hive.server2.session.Check out.interval established to some favourable time price, session will likely be Source shut when it isn't accessed for this length of your time, that may be disabled by setting to zero or unfavorable value.
When hive.improve.limittranspose is accurate, this variable specifies the minimum share (fractional) reduction of your sizing of your outer enter of your sign up for or enter on the union the optimizer should get so that you can utilize the rule.
This limits the amount of partitions which can be asked for in the Metastore for the supplied desk. A question won't be executed if it makes an attempt to fetch more partitions per desk compared to limit configured.
Sasl QOP benefit; set it to 1 of the next values to empower find more information better amounts of protection for HiveServer2 conversation with shoppers.
Regardless of whether to execute Work opportunities in parallel. Relates to MapReduce jobs that may run in parallel, by way of example Careers processing distinct supply tables ahead of a be part of. As of Hive 0.14, also applies to move tasks that may operate in parallel, for example moving data files to insert targets during multi-insert.
Reserved duration for postfix of statistics critical. At this time only meaningful for counter type statistics which should really retain the length of the full statistics vital lesser than the utmost length configured by hive.
A number utilized to proportion sampling. By shifting this selection, person will change the subsets of knowledge sampled.
Scratch House for Hive Careers. This directory is utilized by Hive to store the strategies for various map/decrease phases for that question along with to saved the intermediate outputs of these stages.