Hi, As one of my first task with HBase I started to look into why IntegrationTestRegionReplicaReplication fails. I would like to get some suggestions from you.
I noticed when I run the test using normal cluster or minicluster I get the same error messages: "Error checking data for key [null], no data returned". I looked into the code and here are my conclusions. There are multiple threads writing data parallel which are read by multiple reader threads simultaneously. Each writer gets a portion of the keys to write (e.g. 0-2000) and these keys are added to a ConstantDelayQueue. The reader threads get the elements (e.g. key=1000) from the queue and these reader threads assume that all the keys up to this are already in the database. Since we're using multiple writers it can happen that another thread has not yet written key=500 and verifying these keys will cause the test failure. Do you think my assumption is correct? Thanks, Peter
