TomasHofman edited a comment on issue #2287: ARTEMIS-2069 Backup doesn't 
activate after shared store is reconnected
URL: https://github.com/apache/activemq-artemis/pull/2287#issuecomment-446176184
 
 
   No, if `lockAcquisitionTimeout` is set to -1, it will wait 2 seconds, and 
then retry the lock (the whole thing is in a loop).
   
   There are two situations:
   * `tryLock(pos)` returns null (= lock is already taken), wait 500 ms and 
repeat - *this hasn't changed*.
   * `tryLock(pos)` throws IOException:
     * If `lockAcquisitionTimeout == -1` it will wait 2 seconds and then retry, 
forever.
     * If `lockAcquisitionTimeout != -1`, it will wait 2 seconds or remaining 
time until timeout and retry, or if remaining time is <= 0 exception is thrown.

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