diff --git conf/hive-default.xml.template conf/hive-default.xml.template index c574ab5..73f7c88 100644 --- conf/hive-default.xml.template +++ conf/hive-default.xml.template @@ -1786,6 +1786,26 @@ + hive.fetch.task.conversion.threshold + -1 + + Input threshold for applying hive.fetch.task.conversion. If target table is native, input length + is calculated by summation of file lengths. If it's not native, storage handler for the table + can optionally implement org.apache.hadoop.hive.ql.metadata.InputEstimator interface. + + + + + hive.fetch.task.aggr + false + + Aggregation queries with no group-by clause (for example, select count(*) from src) executes + final aggregations in single reduce task. If this is set true, hive delegates final aggregation + stage to fetch task, possibly decreasing the query time. + + + + hive.cache.expr.evaluation true @@ -1797,17 +1817,6 @@ - - - hive.fetch.task.conversion.threshold - -1 - - Input threshold for applying hive.fetch.task.conversion. If target table is native, input length - is calculated by summation of file lengths. If it's not native, storage handler for the table - can optionally implement org.apache.hadoop.hive.ql.metadata.InputEstimator interface. - - - hive.hmshandler.retry.attempts 1