tree 3b948a931ab33326f3fab0382bc03794e8eeec1f
parent f9fe6dda8e68aaa68d39936f1d184dd7c7d0579b
author Murtadha Hubail <mhubail@apache.org> 1511216430 +0300
committer Murtadha Hubail <mhubail@apache.org> 1511227060 -0800

[NO ISSUE][TX] Make TxnLogFile Close Idempotent

- user model changes: no
- storage format changes: no
- interface changes: yes
  Renamed ILogReader.initializeScan to setPosition and added
  javadocs.

Details:
Currently there is an explicit check that the file channel
of a TxnLogFile is open before closing it. However, the
channel could be closed due to interrupts and therefore
we should remove the explicit check and always try to close
it. However, we should always decrement the TxnLogFile
references counter even if the channel is not open since
that TxnLogFile is not accessed anymore.

Change-Id: I255e4b9af0bc78298c0a25daf0b5629d413eba6a
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2165
Reviewed-by: Till Westmann <tillw@apache.org>
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>