Backport of commit f86f60a
…filemd5. SERVER-6742 This ensures that there are no pending writebacks from the chunks being inserted.
Solaris was crashing because we were using signal() instead of sigaction() to install the dummy signal handler for SIGPIPE. SIGPIPE is supressed via the socket library on other operating systems but this is not an option on Solaris. Conflicts: db/db.cpp
… MongoFiles Conflicts: db/dur.cpp
…bounds for the indexes Make sure to invalidate the cached _master index whenever the _nodes structure is modified. This is a short term fix - the long term is to not use indexes at all.