Cassandra InvalidQueryException: Key may not be empty

Question

InvalidQueryException: Key may not be empty When using the Java Driver for DataStax Astra Cassandra DB.

I'm 100% sure that my partitionKey or my clusteringColumns are not empty. Can someone tell me what this error can mean besides that?

The same code worked 1 hour before what does that exception mean?

Could you please add the code, and an example of what it is being called with. — Andrew, Sep 07 '20 at 14:52
I have an answer to my problem it ByteBuffer.remaining() was null I had to flip() the ByteBuffer thanks anyways guys. — ValW, Sep 07 '20 at 16:30

score 2 · Accepted Answer · answered Sep 07 '20 at 16:30

Thank you guys but I just found it myself.

I wrote a Long into an ByteBuffer and didn't use flip() afterwards.

 public static ByteBuffer toBB(Long x) {
    ByteBuffer bb = ByteBuffer.allocate(Long.BYTES);
    if (x == null) {
        return null;
    }
    bb.putLong(x);
    bb.flip(); //Added this line here and it works
    return bb;
}

Cassandra InvalidQueryException: Key may not be empty

1 Answers1

Linked