VoltDB/voltdb — pull request #520 by mikeismert (2013-05-16 14:55:25+00:00)
Title: Eng4633

Fixup for a couple lingering empty schema, non-blocking stats issues:
1) Work around a case where polling table or index stats when the EE hasn't given the corresponding StatsSource, make sure that we return the full table schema for that statistic.
2) Fix up another lingering intermittent failure because stats became non-blocking.