Tim Armstrong has uploaded this change for review. ( http://gerrit.cloudera.org:8080/11879
Change subject: IMPALA-7477: Batch-oriented query set construction ...................................................................... IMPALA-7477: Batch-oriented query set construction Rework the row-by-row construction of query result sets in PlanRootSink so that it materialises an output column at a time. Make some minor optimisations like preallocating output vectors and initialising strings more efficiently. My intent is both to make this faster and to make the QueryResultSet interface better before IMPALA-4268 does a bunch of surgery on this part of the code. Testing: Ran core tests. Perf: Downloaded tpch_parquet.orders via JDBC driver. Before: 3.01s, After: 2.57s. Downloaded l_orderkey from tpch_parquet.lineitem. Before: 1.21s, After: 1.08s. Change-Id: I764fa302842438902cd5db2551ec6e3cb77b6874 --- M be/src/exec/plan-root-sink.cc M be/src/exec/plan-root-sink.h M be/src/service/hs2-util.cc M be/src/service/hs2-util.h M be/src/service/query-result-set.cc M be/src/service/query-result-set.h 6 files changed, 331 insertions(+), 161 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/79/11879/1 -- To view, visit http://gerrit.cloudera.org:8080/11879 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I764fa302842438902cd5db2551ec6e3cb77b6874 Gerrit-Change-Number: 11879 Gerrit-PatchSet: 1 Gerrit-Owner: Tim Armstrong <[email protected]>
