The maximum memory in bytes which the cached objects can use. Memory made use of is calculated according to estimated measurement of tables and partitions inside the cache. Placing it to the negative value disables memory estimation.
Determine the encoding strategy to use even though writing information. Transforming this may only have an impact on The sunshine weight encoding for integers. This flag is not going to alter the compression standard of greater stage compression codec (like ZLIB). Probable solutions are Velocity and COMPRESSION.
Whether to remove the union and press the operators involving union and the filesink higher than union. This avoids an extra scan in the output by union.
No matter if to rewrite count distinctive into 2 phases, i.e., the primary phase takes advantage of multiple reducers With all the rely distinct important and the next stage makes use of an individual reducer with no critical.
Listing of the underlying PAM services that needs to be used when hive.server2.authentication variety is PAM. A file With all the similar identify will have to exist in /and so on/pam.d.
No matter if to use operator stats to find out reducer parallelism for Hive on Spark. If this is fake, Hive will use resource desk stats to find out reducer parallelism for all initial level lessen responsibilities, and the most reducer parallelism from all parents for all the rest (next level and onward) reducer tasks.
Comma divided list of configuration choices which can be internally employed and really should not be settable by means of set command.
Irrespective of whether to remove the union and drive the operators amongst union plus the filesink earlier mentioned union. This avoids an additional scan with the output by union.
Thrift will not guidance nulls in maps, so any nulls existing in maps retrieved from item-relational mapping (ORM) needs to be either important source pruned or converted to empty strings.
Regardless of whether Hive fetches bitvector when computing range of distinct values (ndv). Hold it established to Untrue if you need to use the previous schema without the need of bitvectors.
No matter whether to rewrite depend unique into two phases, i.e., the first stage makes use of many reducers with the count distinct crucial and the next phase works by using only one reducer with out important.
Hash aggregation will probably be turned off if the ratio involving hash table measurement and enter rows is bigger than this variety. Established to 1 to be sure hash aggregation is never turned off.
A user-specified tailor made LDAP question that should be used to grant/deny an authentication request. If your person is an element in the query's consequence established, authentication succeeds. See Custom Query String for specifics.
Determines the number of compaction records in point out 'did not initiate' might be retained in compaction historical past for any given table/partition.