If ORC reader encounters corrupt information, this worth will likely be made use of to determine no matter if to skip the corrupt facts or throw an exception. The default actions should be to throw an exception.
Really should rework the mapred function or not. This is often initial released by SymlinkTextInputFormat to interchange symlink data files with authentic paths at compile time.
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When genuine, this activates dynamic partition pruning for the Spark motor, to ensure joins on partition keys will likely be processed by creating to a temporary HDFS file, and browse later on for taking away needless partitions.
In unsecure manner, accurate will lead to the metastore to execute DFS functions using the shopper's documented consumer and group permissions.
Creates needed schema on a startup if a person won't exist. Set this to Fake, right after producing it as soon as.
With hive.server2.session.Check out.interval set to a beneficial time value, session are going to be shut when it's actually not learn the facts here now accessed for this duration of your time, which can be disabled by location to zero or detrimental worth.
The canonical listing of configuration Homes is managed from the HiveConf Java course, so check with the HiveConf.java file for a whole list of configuration Attributes out there as part of your Hive launch.
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This controls how many transactions streaming brokers including Flume or Storm open simultaneously. The streaming agent then writes that amount of entries into just get more one file (for every Flume agent or Storm bolt).
Whether a MapJoin hashtable really should deserialize values on need. According to the quantity of values in the table the sign up for will essentially touch, it may possibly save a lot of memory by not developing objects for rows that aren't necessary. If all rows are wanted, clearly there isn't any gain.
In combination with the Hive metastore Houses detailed During this area, some properties are stated in other sections:
In the process of Mapjoin, The crucial element/worth will probably be held inside the hashtable. This price means the load factor for that in-memory hashtable.
The services principal for that metastore thrift server. The Particular string _HOST will get replaced immediately with the right host identify.