Unstable Java TAP Client

Unstable Java TAP Client. When you try to upload all the data from couchbase through TAP slient, periodically arise client hangs. Sometimes it gets from couchbase not all data. In some cases, it helps manual execution for compact bucket. In other cases, the client comes to life after a while. Does anyone faced a similar problem? How to deal with it? Used version 1.4.10 libraries.