Remus Rusanu created HIVE-17051:
-----------------------------------
Summary: Each table metadata is requested twice during query
compile
Key: HIVE-17051
URL: https://issues.apache.org/jira/browse/HIVE-17051
Project: Hive
Issue Type: Bug
Components: Query Planning
Reporter: Remus Rusanu
Assignee: Remus Rusanu
As far as I can tell, for each table referenced in a query the metadata is
retrieved twice during compilation:
first call:
{noformat}
at org.apache.hadoop.hive.ql.metadata.Hive.getTable(Hive.java:1320)
at org.apache.hadoop.hive.ql.metadata.Hive.getTable(Hive.java:1275)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.getTableObjectByName(SemanticAnalyzer.java:10943)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.getMetaData(SemanticAnalyzer.java:1992)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.getMetaData(SemanticAnalyzer.java:1942)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genResolvedParseTree(SemanticAnalyzer.java:11178)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:11309)
at
org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:295)
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:261)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:566)
{noformat}
second call:
{noformat}
at org.apache.hadoop.hive.ql.metadata.Hive.getTable(Hive.java:1320)
at org.apache.hadoop.hive.ql.metadata.Hive.getTable(Hive.java:1275)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.getTableObjectByName(SemanticAnalyzer.java:10943)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.getMetaData(SemanticAnalyzer.java:1992)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.getMetaData(SemanticAnalyzer.java:1942)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.getMetaData(SemanticAnalyzer.java:1934)
at
org.apache.hadoop.hive.ql.parse.CalcitePlanner.genOPTree(CalcitePlanner.java:431)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:11320)
at
org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:295)
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:261)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:566)
{noformat}
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