Rajesh Balamohan created HIVE-17209:
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Summary: ObjectCacheFactory should return null when tez shared
object registry is not setup
Key: HIVE-17209
URL: https://issues.apache.org/jira/browse/HIVE-17209
Project: Hive
Issue Type: Bug
Reporter: Rajesh Balamohan
Priority: Minor
HIVE-15269 introduced dynamic min/max bloom filter
("hive.tez.dynamic.semijoin.reduction=true"). This needs to access ObjectCache
and in tez, ObjectCache can only be created by {{TezProcessor}}.
In the following case {{AM --> splits -->
OrcInputFormat.pickStripes::evaluatePredicateMinMax --> DynamicValue.getLiteral
--> objectCache access}}, AM ends up throwing lots of NPE since AM has not
created ObjectCache.
Orc reader catches these exceptions, skips PPD and proceeds further. For e.g,
in Q95 it ends up throwing ~30,000 NPE before completing split information.
ObjectCacheFactory should return null when tez shared object registry is not
setup.
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