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NIFI-4473: Fixed SelectHiveQL flowfile handling during error conditions 

Signed-off-by: Pierre Villard <pierre.villard.fr@gmail.com>

This closes #2247.
This commit is contained in:
Matthew Burgess 2017-11-02 17:13:22 -04:00 committed by Pierre Villard
parent b5d7aecfac
commit 5cd8a3e729
2 changed files with 28 additions and 3 deletions
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7
nifi-nar-bundles/nifi-hive-bundle/nifi-hive-processors/src/main/java/org/apache/nifi/processors/hive/SelectHiveQL.java
View File

@ -257,7 +257,7 @@ public class SelectHiveQL extends AbstractHiveQLProcessor {
}
private void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException {
final FlowFile fileToProcess = (context.hasIncomingConnection() ? session.get() : null);
FlowFile fileToProcess = (context.hasIncomingConnection() ? session.get() : null);
FlowFile flowfile = null;
// If we have no FlowFile, and all incoming connections are self-loops then we can continue on.
@ -338,8 +338,9 @@ public class SelectHiveQL extends AbstractHiveQLProcessor {
try {
resultSet = (flowbased ? ((PreparedStatement) st).executeQuery() : st.executeQuery(selectQuery));
} catch (SQLException se) {
// If an error occurs during the query, a flowfile is expected to be routed to failure, so create one here (the original will be removed)
flowfile = session.create(fileToProcess);
// If an error occurs during the query, a flowfile is expected to be routed to failure, so ensure one here
flowfile = (fileToProcess == null) ? session.create() : fileToProcess;
fileToProcess = null;
throw se;
}

24
nifi-nar-bundles/nifi-hive-bundle/nifi-hive-processors/src/test/java/org/apache/nifi/processors/hive/TestSelectHiveQL.java
View File

@ -181,6 +181,30 @@ public class TestSelectHiveQL {
runner.assertAllFlowFilesTransferred(SelectHiveQL.REL_FAILURE, 1);
}
@Test
public void testWithBadSQL() throws SQLException {
final String BAD_SQL = "create table TEST_NO_ROWS (id integer)";
// Test with incoming flow file (it should be routed to failure intact, i.e. same content and no parent)
runner.setIncomingConnection(true);
// Try a valid SQL statement that will generate an error (val1 does not exist, e.g.)
runner.enqueue(BAD_SQL);
runner.run();
runner.assertAllFlowFilesTransferred(SelectHiveQL.REL_FAILURE, 1);
MockFlowFile flowFile = runner.getFlowFilesForRelationship(SelectHiveQL.REL_FAILURE).get(0);
flowFile.assertContentEquals(BAD_SQL);
flowFile.assertAttributeEquals("parentIds", null);
runner.clearTransferState();
// Test with no incoming flow file (an empty flow file is transferred)
runner.setIncomingConnection(false);
// Try a valid SQL statement that will generate an error (val1 does not exist, e.g.)
runner.setProperty(SelectHiveQL.HIVEQL_SELECT_QUERY, BAD_SQL);
runner.run();
runner.assertAllFlowFilesTransferred(SelectHiveQL.REL_FAILURE, 1);
flowFile = runner.getFlowFilesForRelationship(SelectHiveQL.REL_FAILURE).get(0);
flowFile.assertContentEquals("");
}
@Test
public void invokeOnTriggerWithCsv()