[CALCITE-821] Frameworks gives NPE when FrameworkConfig has no default schema

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.0-incubating
• Component/s: core
• Assignee: Julian Hyde
• Reporter: Jesús Camacho Rodríguez
• Created: 29/Jul/15 07:50
• Updated: 27/Feb/24 22:24
• Resolved: 29/Jul/15 20:56

Description

During testing of 1.4-SNAPSHOT on Hive, we hit the Exception with the following stacktrace in all our tests:

java.lang.NullPointerException
        at org.apache.calcite.jdbc.CalciteSchema.from(CalciteSchema.java:316)
        at org.apache.calcite.tools.Frameworks$1.apply(Frameworks.java:109)
        at org.apache.calcite.prepare.CalcitePrepareImpl.perform(CalcitePrepareImpl.java:880)
        at org.apache.calcite.tools.Frameworks.withPrepare(Frameworks.java:147)
        at org.apache.calcite.tools.Frameworks.withPlanner(Frameworks.java:105)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner.getOptimizedAST(CalcitePlanner.java:614)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner.genOPTree(CalcitePlanner.java:249)
        at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10130)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:209)
        at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:240)
...

The problem is that the FrameworkConfig defaultSchema is null. Thus, a NPE is thrown after hitting this piece of code in Frameworks:

final CalciteSchema schema =
  CalciteSchema.from(config.getDefaultSchema());

The apply method was changed in CALCITE-748.