commit f76d4f31c37fcd66743323f0dafcbd896220dab4
Author: Greg Althaus <galthaus@austin.rr.com>
Date:   Fri Aug 14 12:00:30 2020 -0500

    fix(transact): fix possible channel miss on wake up and tighten read acquire

    The channel semantics are annoying that you can miss wakeups because
    of timing.  So, close the channel instead of message passing to
    ensure that we are unblocking the waiter.  This is a better
    semantic for this use.

    Also, make the read acquire code a little tighter and clearer.

    Add some debugging helper functions.

M   transact/tx.go

commit 07b7a9ec94d3d9c80f7de1af5dc29733595b7d4b
Author: Greg Althaus <galthaus@austin.rr.com>
Date:   Fri Aug 14 00:24:18 2020 -0500

    fix(replication): fix some holes in sync and order of stream commits

    The synchronizers variable on stack was not protected in all cases by
    the spaceLock.  Also, some races occur around the syncStream buf because
    the atomic check for open could immediately close and generate a panic.

    This moves the sychronizer notifications for commits into the flusher
    to maintain order.  This means that the flusher could be blocked if
    a passive receiver runs slow, but it would slow down the system while
    the system waited for the commit to complete.  Not sure there is much
    difference between the two places.  We could up the queue depth on the
    commit streaming queue.

M   datastack/content.go
M   datastack/streamingSyncActive.go
M   datastack/wal.go

End of Note