Question

I would like to execute a Hive query on the server in an asynchronous manner. The Hive query will likely take a long time to complete, so I would prefer not to block on the call. I am currently using Thirft to make a blocking call (blocks on client.execute()), but I have not seen an example of how to make a non-blocking call. Here is the blocking code:

        TSocket transport = new TSocket("hive.example.com", 10000);
        transport.setTimeout(999999999);
        TBinaryProtocol protocol = new TBinaryProtocol(transport);
        Client client = new ThriftHive.Client(protocol);
        transport.open();
        client.execute(hql);  // Omitted HQL

        List<String> rows;
        while ((rows = client.fetchN(1000)) != null) {
            for (String row : rows) {
                // Do stuff with row
            }
        }

        transport.close();

The code above is missing try/catch blocks to keep it short.

Does anyone have any ideas how to do an async call? Can Hive/Thrift support it? Is there a better way?

Thanks!

Answer 1

After talking to the Hive mailing list, Hive does not support async calls using Thirft.