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Local: implement Put in an atomic, isolated, and durable way #220

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Local: implement Put in an atomic, isolated, and durable way #220

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Commits on Apr 30, 2020

  1. local: implement PUT atomcially 

    The local interface mimics object store, so PUT
operations should not be visible to other readers
until they are complete.
    @urisimchoni
    urisimchoni committed Apr 30, 2020
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  2. local: flush buffers of new file before closing

    @urisimchoni
    urisimchoni committed Apr 30, 2020
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  3. local: when listing files, ignore not-exist errors 

    On Unix systems, Go's os.Walk involves a readdir() followed by
an lstat() of each file found. Between those, the file may be
deleted - this should not fail the entire operation of listing
container's content.
    @urisimchoni
    urisimchoni committed Apr 30, 2020
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  4. local: unit-test the atomicity

    @urisimchoni
    urisimchoni committed Apr 30, 2020
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