Aman Sinha has uploaded this change for review. ( http://gerrit.cloudera.org:8080/17080
Change subject: IMPALA-xxxxx: [WIP] Refactoring to support external frontend. ...................................................................... IMPALA-xxxxx: [WIP] Refactoring to support external frontend. This patch does some minimal refactoring of the frontend code to allow an external frontend to leverage certain apis and class variables. A couple of new methods are also added. The changes include: - modifying a few class methods to be public static - changing visibility of a few private member variables to protected for use by a derived class - adding an alternate PlannerContext constructor - passing an additional initialization parameter to BackendConfig - minimal refactor of selectivity calculation for predicates - refactor of count(*) optimization methods - small changes to the validatePlan and useParallelPlan - new clone method for functions and one for null literals Testing: - Ran PlannerTest - Since these are refactoring changes, no new tests are added in this patch but once other supporting changes are done, I anticipate adding sanity tests for external FE in a future commit. Change-Id: I70035ec082be09a9583275191248d085414b27dd --- M fe/src/main/java/org/apache/impala/analysis/AnalyticExpr.java M fe/src/main/java/org/apache/impala/analysis/BinaryPredicate.java M fe/src/main/java/org/apache/impala/analysis/CompoundPredicate.java M fe/src/main/java/org/apache/impala/analysis/Expr.java M fe/src/main/java/org/apache/impala/analysis/FunctionCallExpr.java M fe/src/main/java/org/apache/impala/analysis/InPredicate.java M fe/src/main/java/org/apache/impala/analysis/IsNullPredicate.java M fe/src/main/java/org/apache/impala/analysis/TupleDescriptor.java M fe/src/main/java/org/apache/impala/analysis/TupleIsNullPredicate.java M fe/src/main/java/org/apache/impala/catalog/HdfsTable.java M fe/src/main/java/org/apache/impala/catalog/ScalarFunction.java M fe/src/main/java/org/apache/impala/planner/DistributedPlanner.java M fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java M fe/src/main/java/org/apache/impala/planner/Planner.java M fe/src/main/java/org/apache/impala/planner/PlannerContext.java M fe/src/main/java/org/apache/impala/planner/ScanNode.java M fe/src/main/java/org/apache/impala/planner/SingleNodePlanner.java M fe/src/main/java/org/apache/impala/planner/SortNode.java M fe/src/main/java/org/apache/impala/service/BackendConfig.java M fe/src/main/java/org/apache/impala/service/Frontend.java 20 files changed, 137 insertions(+), 69 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/80/17080/1 -- To view, visit http://gerrit.cloudera.org:8080/17080 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I70035ec082be09a9583275191248d085414b27dd Gerrit-Change-Number: 17080 Gerrit-PatchSet: 1 Gerrit-Owner: Aman Sinha <amsi...@cloudera.com>
