Github user Ben-Zvi commented on a diff in the pull request:
https://github.com/apache/drill/pull/585#discussion_r79267883
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java
---
@@ -592,11 +592,14 @@ public BatchGroup
mergeAndSpill(LinkedList<BatchGroup> batchGroups) throws Schem
}
injector.injectChecked(context.getExecutionControls(),
INTERRUPTION_WHILE_SPILLING, IOException.class);
newGroup.closeOutputStream();
- } catch (Exception e) {
+ } catch (Throwable e) {
// we only need to cleanup newGroup if spill failed
- AutoCloseables.close(e, newGroup);
+ try {
+ AutoCloseables.close(e, newGroup);
+ } catch (Throwable t) { /* close() may hit the same IO issue; just
ignore */ }
--- End diff --
The root cause for the whole bug is in Hadoop's RawLocalFileSystem.java:
package org.apache.hadoop.fs;
.....
public void write(byte[] b, int off, int len) throws IOException {
try {
fos.write(b, off, len);
} catch (IOException e) { // unexpected exception
throw new FSError(e); // assume native fs error
}
}
And FSError is not a subclass of IOException !!!
java.lang.Object
java.lang.Throwable
java.lang.Error
org.apache.hadoop.fs.FSError
So the only common ancestor is Throwable . And any part in the drill code
that catches only IOException will not catch !!
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