ctubbsii commented on code in PR #2990:
URL: https://github.com/apache/accumulo/pull/2990#discussion_r985169200
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server/manager/src/main/java/org/apache/accumulo/manager/Manager.java:
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@@ -225,6 +226,35 @@ public boolean stillManager() {
return getManagerState() != ManagerState.STOP;
}
+ Fate<Manager> fate() {
+ Fate<Manager> fate = fateReady.get();
+ if (fate != null) {
+ // it's ready, just return it
+ return fate;
+ }
+
+ // it's not ready yet
+ long retryTime = 500; // millis
+
+ // create informative warning
+ String msgPrefix = "Unexpected use of fate in thread " +
Thread.currentThread().getName()
+ + " at time " + System.currentTimeMillis();
+ log.warn("{} blocked until fate starts", msgPrefix,
+ new IllegalStateException("Attempted fate action before fate was
started; "
+ + "if this doesn't make progress, please report it as a bug to the
developers"));
Review Comment:
I'm not sure about shutting down the manager. The manager might not be able
to help that a tserver or client is asking it to do something when it's not
ready. But, I do like the idea of logging periodically if it isn't making
progress. I'd rather put it into a loop for that. I could make it 5 minutes and
log a warning. I used trace before when I was looping 250ms, but warning I
think is most appropriate if it's stuck for 5 minutes.
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