Encountered invalid UTF-8 error, and cannot proceed further

Issues Dgraph Clients
,
1

Posted by lxwithgod:

when i insert into data in loop,i meet
Caused by: com.dataPlatform.protobuf.InvalidProtocolBufferException: Protocol message had invalid UTF-8.
after,i can’t insert into any new data unitil i restart server.

2

deepakjois commented :

Could you post a minmal example here, which reproduces the problem.

3

lxwithgod commented :

this is v0.9.1

JsonObject json = new JsonObject();
json.addProperty(“name”, “Alice”);
// System.out.println(json.toString());
for(int i=0;i<10000;i++) {
System.out.println(json.toString());
Mutation mu =
Mutation.newBuilder()
.setSetJson(ByteString.copyFromUtf8(json.toString()))
.build();
dgraphClient.newTransaction().mutate(mu);
}

4

deepakjois commented :

This is a duplicate of #29. This is a bug that will need to be fixed in the server. I will update that issue with more details. Please follow there.

I had some comments about your client code, however. You do not seem to be committing the transaction. You have two options:

Either set the CommitNow field in the mutation.

Mutation mu =
Mutation.newBuilder()
.setSetJson(ByteString.copyFromUtf8(json.toString()))
.setCommitNow(true)
.build();

or, a better solution is to call Transaction#Commit() sometime. You can call it immediately after the mutation, or at the end of your loop after all the mutations have been done.

Transaction txn = dgraphClient.newTransaction()
for(int i=0;i<10000;i++) {
  System.out.println(json.toString());
  Mutation mu =
    Mutation.newBuilder()
    .setSetJson(ByteString.copyFromUtf8(json.toString()))
    .build();
    txn.mutate(mu);
}
txn.commit()

Hope that helps.

5

deepakjois commented :

Closed in favor of #29