Github user afine commented on a diff in the pull request:
https://github.com/apache/zookeeper/pull/157#discussion_r98574493
--- Diff: src/java/test/org/apache/zookeeper/server/quorum/Zab1_0Test.java
---
@@ -839,12 +839,25 @@ public void converseWithFollower(InputArchive ia,
OutputArchive oa,
Assert.assertEquals(1, f.self.getAcceptedEpoch());
Assert.assertEquals(1, f.self.getCurrentEpoch());
+ //Wait for the transactions to be written out. The
thread that writes them out
+ // does not send anything back when it is done.
+ long start = System.currentTimeMillis();
+ while (createSessionZxid !=
f.fzk.getLastProcessedZxid() && (System.currentTimeMillis() - start) < 50) {
--- End diff --
just an idea, not sure if it is worth the effort and it may be outside the
scope of this patch.
we could play with the test infrastructure here a little bit and do some
dependency injection in `createFollower` that can let us track if db clearing
and snapshotting occurs when expected.
this may help prevent hard to track race conditions with tests like this in
the future.
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