This flag needs to be established to correct to enable vectorizing rows utilizing vector deserialize. The default worth is fake.
configured with embedded metastore. To acquire ideal functionality, set config to meet the following ailment
LDAP link URL(s), worth may very well be a SPACE divided listing of URLs to a number of LDAP servers for resiliency. URLs are tried using while in the purchase specified until finally the relationship is profitable.
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Hash aggregation will be turned off If your ratio concerning hash desk measurement and input rows is larger than this selection. Set to one to ensure hash aggregation is never turned off.
Ought to rework the mapred do the job or not. This is often initially released by SymlinkTextInputFormat to switch symlink documents with authentic paths at compile time.
Time in milliseconds amongst runs from the cleaner thread. Increasing this benefit will lengthen some time it will take to wash up outdated, now not used versions of data and reduce the load about the metastore server.
Whether or not to execute Careers in parallel. Applies to MapReduce Positions which will operate in parallel, by way of example blog here Positions processing distinct resource tables in advance of a be a part of. As of Hive 0.fourteen, also applies to move jobs that will operate in parallel, one example is going information to insert targets during multi-insert.
Whether to utilize a binary search to discover the entries within an index table that match the filter, where by achievable.
If the Edition of Hadoop which can be operating supports sub-directories for tables/partitions. Numerous Hive optimizations may be applied When the Hadoop version supports sub-directories for tables/partitions. This assistance was added by MAPREDUCE-1501.
Chooses whether or not query fragments will operate within a container or in LLAP. When set to "all" everything operates in LLAP if possible; "only" is like "all" but disables fallback to containers, so the question fails if it are not able to run in LLAP.
If enabled dictionary Verify will happen following initial row index stride (default 10000 rows) else dictionary check will materialize right before composing very first stripe. In equally circumstances, the decision to use dictionary or not will be retained thereafter.
The privileges quickly granted to some teams whenever a table gets developed. An instance like "groupX,groupY:decide on;groupZ:make" will grant choose privilege to groupX and groupY, and grant develop privilege to groupZ Every time a whole new desk made.
Whether to help Log4j2's asynchronous logging. Asynchronous logging can provide substantial efficiency improvement as logging is going to be managed in a very individual thread that works by using the LMAX disruptor queue for buffering log messages.