[jira] [Created] (CALCITE-3673) ListTransientTable should not leave tables in the schema

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

Vladimir Sitnikov created CALCITE-3673:
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             Summary: ListTransientTable should not leave tables in the schema
                 Key: CALCITE-3673
                 URL: https://issues.apache.org/jira/browse/CALCITE-3673
             Project: Calcite
          Issue Type: New Feature
          Components: core
    Affects Versions: 1.21.0
            Reporter: Vladimir Sitnikov


1) org.apache.calcite.schema.impl.ListTransientTable#scan adds itself to a schema: root.getRootSchema().add(name, this); however, it misses cleanup, so it looks like a memory leak

2) ListTransientTable is not implementable with EnumerableTableScan as org.apache.calcite.tools.RelBuilder#transientScan(java.lang.String, org.apache.calcite.rel.type.RelDataType) is using org.apache.calcite.prepare.RelOptTableImpl#create(org.apache.calcite.plan.RelOptSchema, org.apache.calcite.rel.type.RelDataType, org.apache.calcite.schema.Table, com.google.common.collect.ImmutableList<java.lang.String>) which creates RelOptTableImpl with NULL expressionFunction which means org.apache.calcite.prepare.RelOptTableImpl#getExpression returns null



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