Github user anew commented on a diff in the pull request:

    https://github.com/apache/incubator-tephra/pull/72#discussion_r184323707
  
    --- Diff: tephra-core/src/main/java/org/apache/tephra/coprocessor/TransactionStateCache.java ---
    @@ -78,6 +78,7 @@ protected void startUp() throws Exception {
       protected void shutDown() throws Exception {
         if (refreshService != null) {
           refreshService.interrupt();
    +      refreshService.join(1000);
    --- End diff --
    
    this means, if the refreshService does not finish within a second, shutdown() will throw exception? And the remainder of the shutdown sequence is not performed? Is that intentional?


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