There exists a possibility for an in-flight read on a TSMReader to read
a stale reference to an mmapped TSM file index, which has become
unmapped.
This commit resolves that issue by simply renaming the file, leaving the
original file handler open and the data mapped. The path is updated so
that if any callers need to refer to the name of the TSM file after it's
renamed, the new name will be reflected.
The orphaned file handler will be closed when the TSM file is closed.
I did this with a dumb editor macro, so some comments changed too.
Also rename root package from platform to influxdb.
In interest of minimizing risk, anyone importing the root package has
now aliased it to "platform" so that no changes beyond imports were
necessary in those files.
Lastly, replace the old platform module to local path /dev/null so that
nobody can accidentally reintroduce a platform dependency while
migrating platform code to influxdb.
maxunt
Edd Robinson
Mark Rushakoff
Jeff Wendling