Todd Lipcon created HDFS-3800:
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Summary: QJM: improvements to QJM fault testing
Key: HDFS-3800
URL: https://issues.apache.org/jira/browse/HDFS-3800
Project: Hadoop HDFS
Issue Type: Sub-task
Affects Versions: QuorumJournalManager (HDFS-3077)
Reporter: Todd Lipcon
Assignee: Todd Lipcon
This JIRA improves TestQJMWithFaults as follows:
- the current implementation didn't properly unwrap exceptions thrown by the
reflection-based injection method. This caused some issues in the code where
the injecting proxy didn't act quite like the original object.
- the current implementation incorrectly assumed that the recovery process
would recover to _exactly_ the last acked sequence number. In fact, it may
recover to that transaction _or any greater transaction_.
It also adds a new randomized test which uncovered a number of other bugs. I
will defer to the included javadoc for a description of this test.
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