only create block streams in mapi_start_talking. This is needed for the embedded case.
only create block streams in mapi_start_talking. This is needed for
the embedded case.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb