Michael Smith has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/21142


Change subject: IMPALA-12737: List key columns in query history
......................................................................

IMPALA-12737: List key columns in query history

Adds a new column - key_columns - to impala_query_log and
impala_query_live collecting columns that are important for estimating
cardinality of the query. These include columns referenced in
'where', 'group by', and 'having' clauses of a 'select' query; and the
'where' clause of an 'update' or 'delete' statement.

Column names are presented in a comma-separated list of fully qualified
paths.

Change-Id: I78f3670b067c0c192ee8a212fba95466fbcb51d7
---
M be/src/exec/system-table-scanner.cc
M be/src/service/client-request-state.h
M be/src/service/query-state-record.cc
M be/src/service/query-state-record.h
M be/src/service/workload-management.h
M common/thrift/Frontend.thrift
M common/thrift/SystemTables.thrift
M fe/src/main/java/org/apache/impala/analysis/Analyzer.java
M fe/src/main/java/org/apache/impala/analysis/ModifyStmt.java
M fe/src/main/java/org/apache/impala/analysis/Path.java
M fe/src/main/java/org/apache/impala/analysis/QueryStmt.java
M fe/src/main/java/org/apache/impala/analysis/SelectStmt.java
M fe/src/main/java/org/apache/impala/analysis/TableRef.java
M fe/src/main/java/org/apache/impala/service/Frontend.java
14 files changed, 79 insertions(+), 2 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/42/21142/1
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I78f3670b067c0c192ee8a212fba95466fbcb51d7
Gerrit-Change-Number: 21142
Gerrit-PatchSet: 1
Gerrit-Owner: Michael Smith <[email protected]>

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