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ASF GitHub Bot commented on DRILL-2288: --------------------------------------- Github user hnfgns commented on a diff in the pull request: https://github.com/apache/drill/pull/245#discussion_r44199082 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/record/RecordBatch.java --- @@ -23,60 +23,214 @@ import org.apache.drill.exec.record.selection.SelectionVector4; /** - * A record batch contains a set of field values for a particular range of records. In the case of a record batch - * composed of ValueVectors, ideally a batch fits within L2 cache (~256k per core). The set of value vectors do not - * change unless the next() IterOutcome is a *_NEW_SCHEMA type. - * - * A key thing to know is that the Iterator provided by record batch must align with the rank positions of the field ids - * provided utilizing getValueVectorId(); + * A record batch contains a set of field values for a particular range of --- End diff -- documentation :+1: > ScanBatch violates IterOutcome protocol for zero-row sources [was: missing > JDBC metadata (schema) for 0-row results...] > ----------------------------------------------------------------------------------------------------------------------- > > Key: DRILL-2288 > URL: https://issues.apache.org/jira/browse/DRILL-2288 > Project: Apache Drill > Issue Type: Bug > Components: Storage - Information Schema > Reporter: Daniel Barclay (Drill) > Assignee: Daniel Barclay (Drill) > Fix For: 1.4.0 > > Attachments: Drill2288NoResultSetMetadataWhenZeroRowsTest.java > > > The ResultSetMetaData object from getMetadata() of a ResultSet is not set up > (getColumnCount() returns zero, and trying to access any other metadata > throws IndexOutOfBoundsException) for a result set with zero rows, at least > for one from DatabaseMetaData.getColumns(...). -- This message was sent by Atlassian JIRA (v6.3.4#6332)