Fix prepared statement metadata cache issue#543

Merged

xiangyushawn merged 14 commits intomicrosoft:devfrom xiangyushawn:fix-metadata-cache-2

Nov 17, 2017

+226-177

Commits on Nov 3, 2017

Commits on Nov 4, 2017

fix failures in requesthandling test
xiangyushawn
committed

Commits on Nov 7, 2017

fix "handle is not valid" error. If context changed once, metadata caching is disabled on the connection
xiangyushawn
committed

Commits on Nov 8, 2017

clear cached prepared statement handle when pooled connection is removed
xiangyushawn
committed

Commits on Nov 9, 2017

Commits on Nov 11, 2017

process all batch first, then throw batch exception is there is one, otherwise throw sql server exception
xiangyushawn
committed

Commits on Nov 17, 2017

re-enable metadata caching after context change
xiangyushawn
committed