gbzy

**Describe the bug** Load databases when initial client session, which cause task to fail. **What happens instead** `Caused by: java.lang.IllegalArgumentException: invalid encoded hash data key prefix: m at org.tikv.shade.com.google.common.base.Preconditions.checkArgument(Preconditions.java:142) ~[pool-1-thread-7-1655696784783-flink-tidb-connector-1.13-0.0.5-SNAPSHOT.jar:?]...