Catalog when fails(or passes) to load block metadata of specific table files, throws following messages in logs.
I0128 01:54:33.537742 22702 HdfsTable.java:345] load block md for table-x file 000066_0
I0128 01:54:59.373677 22702 BlockStorageLocationUtil.java:167] Cancelled while waiting for datanode x.y.z.215:50020: java.util.concurrent.CancellationException
I0128 01:54:59.373868 22702 BlockStorageLocationUtil.java:167] Cancelled while waiting for datanode x.y.z.148:50020: java.util.concurrent.CancellationException
These logs will be more useful if the entire hierarchy of file location is logged including all levels of partitions.
Since just file name like "000066_0" can be present for thousands of partitions under same table, it is difficult to isolate the problematic file with a just above log entry.