Tomasz Grabiec 6555a2f50b commitlog: Discard active but unused segments on shutdown ...

So that they are not left on disk even though we did a clean shutdown.

First part of the fix is to ensure that closed segments are recognized
as not allocating (_closed flag). Not doing this prevents them from
being collected by discard_unused_segments(). Second part is to
actually call discard_unused_segments() on shutdown after all segments
were shut down, so that those whose position are cleared can be
removed.

Fixes #2550.

Message-Id: <1499358825-17855-1-git-send-email-tgrabiec@scylladb.com>

2017-07-09 19:25:22 +03:00

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