@Override
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
try {
// get the tableDesc from the map stored in the mapjoin operator
HashTableSinkObjectCtx ctx = MapJoinOperator.getMetadata().get(Integer.valueOf(metadataTag));
Writable val = ctx.getSerDe().getSerializedClass().newInstance();
val.readFields(in);
ArrayList<Object> list =
(ArrayList<Object>)
ObjectInspectorUtils.copyToStandardObject(
ctx.getSerDe().deserialize(val),
ctx.getSerDe().getObjectInspector(),
ObjectInspectorCopyOption.WRITABLE);
if (list == null) {
obj = new ArrayList(0).toArray();
} else {
obj = list.toArray();
}
} catch (Exception e) {
throw new IOException(e);
}
}
