[
https://issues.apache.org/jira/browse/ASTERIXDB-1490?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yingyi Bu closed ASTERIXDB-1490.
--------------------------------
Resolution: Fixed
Fixed with a regression test.
> NPE for negative expression
> ---------------------------
>
> Key: ASTERIXDB-1490
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-1490
> Project: Apache AsterixDB
> Issue Type: Bug
> Components: Optimizer
> Reporter: Yingyi Bu
> Assignee: Yingyi Bu
> Priority: Critical
>
> Query:
> {noformat}
> SELECT VALUE COUNT(1)
> FROM (
> SELECT DISTINCT VALUE -n.foo
> FROM Bar n
> ) tmp;
> {noformat}
> Exception trace:
> {noformat}
> java.lang.NullPointerException
> at
> org.apache.asterix.om.typecomputer.impl.ListConstructorTypeComputer.computeTypeFromItems(ListConstructorTypeComputer.java:59)
> at
> org.apache.asterix.om.typecomputer.impl.ListConstructorTypeComputer.computeType(ListConstructorTypeComputer.java:50)
> at
> org.apache.asterix.dataflow.data.common.AqlExpressionTypeComputer.getTypeForFunction(AqlExpressionTypeComputer.java:75)
> at
> org.apache.asterix.dataflow.data.common.AqlExpressionTypeComputer.getType(AqlExpressionTypeComputer.java:53)
> at
> org.apache.hyracks.algebricks.core.algebra.operators.logical.AggregateOperator.computeOutputTypeEnvironment(AggregateOperator.java:106)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.AlgebricksOptimizationContext.computeAndSetTypeEnvironmentForOperator(AlgebricksOptimizationContext.java:295)
> at
> org.apache.hyracks.algebricks.rewriter.rules.InferTypesRule.rewritePost(InferTypesRule.java:42)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController.rewriteOperatorRef(AbstractRuleController.java:125)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController.rewriteOperatorRef(AbstractRuleController.java:111)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController.rewriteOperatorRef(AbstractRuleController.java:99)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController.rewriteOperatorRef(AbstractRuleController.java:99)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController.rewriteOperatorRef(AbstractRuleController.java:99)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController.rewriteOperatorRef(AbstractRuleController.java:99)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController.rewriteOperatorRef(AbstractRuleController.java:99)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController.rewriteOperatorRef(AbstractRuleController.java:99)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController.rewriteOperatorRef(AbstractRuleController.java:99)
> at
> org.apache.hyracks.algebricks.compiler.rewriter.rulecontrollers.SequentialOnceRuleController.rewriteWithRuleCollection(SequentialOnceRuleController.java:44)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.HeuristicOptimizer.runOptimizationSets(HeuristicOptimizer.java:95)
> at
> org.apache.hyracks.algebricks.core.rewriter.base.HeuristicOptimizer.optimize(HeuristicOptimizer.java:82)
> at
> org.apache.hyracks.algebricks.compiler.api.HeuristicCompilerFactoryBuilder$1$1.optimize(HeuristicCompilerFactoryBuilder.java:88)
> at
> org.apache.asterix.api.common.APIFramework.compileQuery(APIFramework.java:263)
> at
> org.apache.asterix.aql.translator.QueryTranslator.rewriteCompileQuery(QueryTranslator.java:1959)
> at
> org.apache.asterix.aql.translator.QueryTranslator.handleQuery(QueryTranslator.java:2521)
> at
> org.apache.asterix.aql.translator.QueryTranslator.compileAndExecute(QueryTranslator.java:389)
> at
> org.apache.asterix.aql.translator.QueryTranslator.compileAndExecute(QueryTranslator.java:253)
> at
> org.apache.asterix.api.http.servlet.APIServlet.doPost(APIServlet.java:148)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
> at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:546)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:483)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:970)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:411)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:904)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
> at org.eclipse.jetty.server.Server.handle(Server.java:347)
> at
> org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:439)
> at
> org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:924)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:781)
> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:220)
> at
> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:43)
> at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:545)
> at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:43)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> But the following equivalent query works:
> {noformat}
> SELECT VALUE COUNT(1)
> FROM (
> SELECT DISTINCT VALUE 0-n.foo
> FROM NBALife n
> ) tmp;
> {noformat}
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