Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/666#discussion_r94638547
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/WriterRecordBatch.java
---
@@ -174,13 +174,23 @@ protected void setupNewSchema() throws IOException {
schema = container.getSchema();
}
+ /** Clean up needs to be performed before closing writer. Partially
written data will be removed. */
private void closeWriter() {
if (recordWriter != null) {
try {
recordWriter.cleanup();
- recordWriter = null;
} catch(IOException ex) {
context.fail(ex);
+ } finally {
+ try {
+ if (!processed) {
--- End diff --
closeWriter() should not be called twice. But, our code is pretty sloppy
during close operations. If this is called twice, processed will still be
false, but recordWriter will be null. Result: NPE. Perhaps change this to:
```
if (recordWriter == null) { return; }
// Other logic here...
```
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
