[jira] [Created] (CALCITE-4778) Exchange operator deserialize fail

["xzh_dz (Jira)" <ji...@apache.org>]

xzh_dz created CALCITE-4778:
-------------------------------

             Summary: Exchange operator deserialize fail
                 Key: CALCITE-4778
                 URL: https://issues.apache.org/jira/browse/CALCITE-4778
             Project: Calcite
          Issue Type: Improvement
            Reporter: xzh_dz


{code:java}
// code placeholder
org.apache.calcite.plan.RelWriterTest
@Test public void testExchange() {
  final FrameworkConfig config = RelBuilderTest.config().build();
  final RelBuilder builder = RelBuilder.create(config);
  final RelNode rel = builder
      .scan("EMP")
      .exchange(RelDistributions.hash(ImmutableList.of(0, 1)))
      .build();
  final String relJson = RelOptUtil.dumpPlan("", rel,
      SqlExplainFormat.JSON, SqlExplainLevel.EXPPLAN_ATTRIBUTES);
  String s = deserializeAndDumpToTextFormat(getSchema(rel), relJson);
  final String expected = ""
      + "LogicalExchange(distribution=[hash[0, 1]])\n"
      + "  LogicalTableScan(table=[[scott, EMP]])\n";
  assertThat(s, isLinux(expected));
}
{code}
java.lang.NullPointerException: no entry for tag collationjava.lang.NullPointerException: no entry for tag collationjava.lang.RuntimeException: java.lang.NullPointerException: no entry for tag collation at org.apache.calcite.tools.Frameworks.withPrepare(Frameworks.java:193) at org.apache.calcite.tools.Frameworks.withPlanner(Frameworks.java:135) at org.apache.calcite.tools.Frameworks.withPlanner(Frameworks.java:153)

Caused by: java.lang.NullPointerException: no entry for tag collationCaused by: java.lang.NullPointerException: no entry for tag collation at java.util.Objects.requireNonNull(Objects.java:290) at org.apache.calcite.rel.externalize.RelJsonReader$2.getNonNull(RelJsonReader.java:202) at org.apache.calcite.rel.externalize.RelJsonReader$2.getCollation(RelJsonReader.java:260) at org.apache.calcite.rel.core.Exchange.<init>(Exchange.java:73) at org.apache.calcite.rel.logical.LogicalExchange.<init>(LogicalExchange.java:44) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.calcite.rel.externalize.RelJsonReader.readRel(RelJsonReader.java:289) at org.apache.calcite.rel.externalize.RelJsonReader.readRels(RelJsonReader.java:107)



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