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When auto reducer parallelism is enabled this factor will be used to put a lower limit to the number of reducers that Tez specifies.

LLAP

Long Live and Process (LLAP) functionality was added in Hive 2.0 (HIVE-7926 and associated tasks).  For details see LLAP in Hive.

LLAP adds the following properties. 

hive.execution.mode

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.user.install.directory

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.tez.input.generate.consistent.splits

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.server2.llap.concurrent.queries

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.enabled

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.use.lowlevel.cache

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.cache.orc.alloc.min

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.cache.orc.alloc.max

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.cache.orc.arena.size

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.cache.orc.size

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.cache.direct

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.lrfu.lambda

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.threadpool.size

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.use.lrfu

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.io.orc.time.counters

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.auto.allow.uber

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.auto.enforce.tree

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.auto.enforce.vectorized

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.auto.enforce.stats

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.auto.max.input.size

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.auto.max.output.size

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.execution.mode

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.object.cache.enabled

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.queue.metrics.percentiles.intervals

• Default Value: 
• Added In: Hive 2.0.0 with ..

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Whitelist based UDF support (HIVE-12852)

hive.llap.daemon.allow.permanent.fns

• Default Value: 
• Added In: Hive 2.0.0 with ..

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hive.llap.daemon.download.permanent.fns

• Default Value: 
• Added In: Hive 2.0.0 with ..

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Transactions and Compactor

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