Github user wagnermarkd commented on a diff in the pull request:
https://github.com/apache/orc/pull/29#discussion_r65266565
--- Diff: java/mapreduce/src/java/org/apache/orc/mapred/OrcList.java ---
@@ -71,4 +71,30 @@ public void readFields(DataInput input) throws
IOException {
}
}
}
+
+ @Override
+ public int compareTo(OrcList<E> other) {
+ if (other == null) {
+ return -1;
+ }
+ int ourSize = size();
+ int otherSize = other.size();
+ for(int e=0; e < ourSize && e < otherSize; ++e) {
+ Writable ours = get(e);
+ Writable theirs = other.get(e);
+ if (ours == null) {
+ if (theirs != null) {
+ return 1;
+ }
+ } else if (theirs == null) {
+ return -1;
+ } else {
+ int val = ((Comparable<Writable>) ours).compareTo(theirs);
--- End diff --
Comparing two complex types with different nested types will cause trouble
here. To avoid this, we need to first compare the schemas, then the values.
This applies to all the complex types.
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