Github user JPercivall commented on a diff in the pull request:
https://github.com/apache/nifi/pull/178#discussion_r50213360
--- Diff:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/ExecuteSQL.java
---
@@ -164,17 +166,31 @@ public void process(final OutputStream out) throws
IOException {
});
// set attribute how many rows were selected
- outgoing = session.putAttribute(outgoing, RESULT_ROW_COUNT,
nrOfRows.get().toString());
+ fileToProcess = session.putAttribute(fileToProcess,
RESULT_ROW_COUNT, nrOfRows.get().toString());
- logger.info("{} contains {} Avro records; transferring to
'success'", new Object[] {outgoing, nrOfRows.get()});
- session.getProvenanceReporter().modifyContent(outgoing,
"Retrieved " + nrOfRows.get() + " rows",
stopWatch.getElapsed(TimeUnit.MILLISECONDS));
- session.transfer(outgoing, REL_SUCCESS);
+ logger.info("{} contains {} Avro records; transferring to
'success'",
+ new Object[] {fileToProcess, nrOfRows.get()});
+ session.getProvenanceReporter().modifyContent(fileToProcess,
"Retrieved " + nrOfRows.get() + " rows",
+ stopWatch.getElapsed(TimeUnit.MILLISECONDS));
+ session.transfer(fileToProcess, REL_SUCCESS);
} catch (final ProcessException | SQLException e) {
- if (incoming == null) {
- logger.error("Unable to execute SQL select query {} due to
{}. No incoming flow file to route to failure", new Object[] {selectQuery, e});
+ if (fileToProcess == null) {
+ // This can happen if any exceptions occur while setting
up the connection, statement, etc.
+ logger.error("Unable to execute SQL select query {} due to
{}. No incoming flow file to route to failure",
+ new Object[] {selectQuery, e});
+ context.yield();
} else {
- logger.error("Unable to execute SQL select query {} for {}
due to {}; routing to failure", new Object[] {selectQuery, incoming, e});
- session.transfer(incoming, REL_FAILURE);
+ if(context.hasIncomingConnection()) {
+ logger.error("Unable to execute SQL select query {}
for {} due to {}; routing to failure",
+ new Object[] {selectQuery, fileToProcess, e});
+ session.transfer(fileToProcess,
REL_FAILURE);
--- End diff --
I think this snuck in there.
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