[
https://issues.apache.org/jira/browse/DRILL-2288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14984769#comment-14984769
]
ASF GitHub Bot commented on DRILL-2288:
---------------------------------------
Github user jacques-n commented on a diff in the pull request:
https://github.com/apache/drill/pull/228#discussion_r43597994
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java
---
@@ -309,7 +309,14 @@ public Object getObject(int index) {
Map<String, Object> vv = new JsonStringHashMap<>();
for (String child:getChildFieldNames()) {
ValueVector v = getChild(child);
- if (v != null) {
+ // TODO(DRILL-4001): Resolve this hack:
--- End diff --
Can you add what happens if this hack isn't done? What is the error?
> 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: 1.3.0
>
> 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)
