Blocks other threads when initialize HiveConf

[wxplovecc]

Describe the bug When the request QPS with 1000+, Blocks other threads when initialize HiveConf.

To Reproduce

Expected behavior May be we should add some cache.

    HiveConfFactory confFactory = new HiveConfFactory(Collections.emptyList(), properties);
    HiveConf conf = hiveConfs.computeIfAbsent(uris, t-> confFactory.newInstance());
    return defaultMetaStoreClientFactory
        .newInstance(conf, "waggledance-" + name, DEFAULT_CLIENT_FACTORY_RECONNECTION_RETRY,
            connectionTimeout);

Logs Please add the log output from Waggle Dance when the error occurs, full stack traces are especially useful. It might also be worth looking in the Hive metastore service log files to see if anything is output there and including that too.

Versions (please complete the following information):

• Waggle Dance Version:
• Hive Versions: for whatever Hive client libraries you are using as well as the versions of Hive in the metastore sevices that Waggle Dance is proxying

Additional context Add any other context about the problem here.

[patduin]

nice find, yeah they only need to be created on application startup, so some sort of cache or eager initialisation would be fine.

Would you consider raising a PR?

[wxplovecc]

fixed