Major Description
When checking for HFileV1 before upgrading to 96, the snapshot file links tries to read from post-namespace locations. The migration script needs to be run on 94 cluster, and it requires reading the old (94) layout to check for HFileV1.
Got exception while reading trailer for file: hdfs://xxx:41020/cops/cluster_collection_events_snapshot/2086db948c484be62dcd76c170fe0b17/meta/cluster_collection_event=42037b88dbc34abff6cbfbb1fde2c900-c24b358ddd2f4429a7287258142841a2 java.io.FileNotFoundException: Unable to open link: org.apache.hadoop.hbase.io.HFileLink locations=[hdfs://xxx:41020/hbase-96/data/default/cluster_collection_event/42037b88dbc34abff6cbfbb1fde2c900/meta/c24b358ddd2f4429a7287258142841a2, hdfs://xxx:41020/hbase-96/.tmp/data/default/cluster_collection_event/42037b88dbc34abff6cbfbb1fde2c900/meta/c24b358ddd2f4429a7287258142841a2, hdfs://xxx:41020/hbase-96/archive/data/default/cluster_collection_event/42037b88dbc34abff6cbfbb1fde2c900/meta/c24b358ddd2f4429a7287258142841a2]