void clear() {
    serverLocks.clear();
    namespaceLocks.clear();
    tableLocks.clear();
    regionLocks.clear();
    peerLocks.clear();
  }
Removes all locks by clearing the maps. Used when procedure executor is stopped for failure and
recovery testing.
hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/SchemaLocking.java