Hive-wiki建议参数测试一下

https://cwiki.apache.org/confluence/display/Hive/Hive+on+Spark%3A+Getting+Started

Hive wiki Recommended Configuration
可以根据现有集群测试一下这些参数效果

mapreduce.input.fileinputformat.split.maxsize=750000000
hive.vectorized.execution.enabled=true

hive.cbo.enable=true
hive.optimize.reducededuplication.min.reducer=4
hive.optimize.reducededuplication=true
hive.orc.splits.include.file.footer=false
hive.merge.mapfiles=true
hive.merge.sparkfiles=false
hive.merge.smallfiles.avgsize=16000000
hive.merge.size.per.task=256000000
hive.merge.orcfile.stripe.level=true
hive.auto.convert.join=true
hive.auto.convert.join.noconditionaltask=true
hive.auto.convert.join.noconditionaltask.size=894435328
hive.optimize.bucketmapjoin.sortedmerge=false
hive.map.aggr.hash.percentmemory=0.5
hive.map.aggr=true
hive.optimize.sort.dynamic.partition=false
hive.stats.autogather=true
hive.stats.fetch.column.stats=true
hive.vectorized.execution.reduce.enabled=false
hive.vectorized.groupby.checkinterval=4096
hive.vectorized.groupby.flush.percent=0.1
hive.compute.query.using.stats=true
hive.limit.pushdown.memory.usage=0.4
hive.optimize.index.filter=true
hive.exec.reducers.bytes.per.reducer=67108864
hive.smbjoin.cache.rows=10000
hive.exec.orc.default.stripe.size=67108864
hive.fetch.task.conversion=more
hive.fetch.task.conversion.threshold=1073741824
hive.fetch.task.aggr=false
mapreduce.input.fileinputformat.list-status.num-threads=5
spark.kryo.referenceTracking=false
spark.kryo.classesToRegister=org.apache.hadoop.hive.ql.io.HiveKey,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch