Pessimistic Lock on key exception

[jjz921024]

Bug Report

1. Describe the bug

lock some key using pessimistic lock cause exception:

2. Minimal reproduce step (Required)

Kvrpcpb.Mutation mutation = Kvrpcpb.Mutation.newBuilder()
            .setKey(primaryKey)
            .setOp(Kvrpcpb.Op.PessimisticLock)
            .build();
RegionStoreClient client = tiSession.getRegionStoreClientBuilder().build(primaryKey);
client.prewrite(backOffer, primaryKey, Collections.singletonList(mutation), startTs, 10_000);

3. What did you see instead (Required)

Exception cause:

org.tikv.common.exception.TiClientInternalException: Prewrite Response failed without a cause
	at org.tikv.common.region.RegionStoreClient.isPrewriteSuccess(RegionStoreClient.java:441) ~[tikv-client-java-3.2.0.jar:na]
	at org.tikv.common.region.RegionStoreClient.prewrite(RegionStoreClient.java:420) ~[tikv-client-java-3.2.0.jar:na]
	at org.tikv.common.region.RegionStoreClient.prewrite(RegionStoreClient.java:368) ~[tikv-client-java-3.2.0.jar:na]

4. What did you expect to see? (Required)

success and key had been locked

5. What are your Java Client and TiKV versions? (Required)

• Client Java: 3.2.0
• TiKV: 5.3.0

[iosmanthus]

Client-java does not support PessimisticLock. it focuses on the RawKV function instead of the transaction for now. For full transaction support, use https://github.com/tikv/client-go instead.

[github-actions[bot]]

This issue is stale because it has been open 30 days with no activity.