always return non nil Rows in fakesqldb.Conn#561
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yaoshengzhe merged 1 commit intovitessio:masterfrom Apr 12, 2015
yaoshengzhe:fix_always_non_nil_rows_in_fakesqldb
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always return non nil Rows in fakesqldb.Conn#561yaoshengzhe merged 1 commit intovitessio:masterfrom yaoshengzhe:fix_always_non_nil_rows_in_fakesqldb
yaoshengzhe merged 1 commit intovitessio:masterfrom
yaoshengzhe:fix_always_non_nil_rows_in_fakesqldb
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fakesqldb.Conn will not init proto.QueryResult.Rows if RowsAffected is zero. However, according to go/mysql/mysql.go, the ideal response should be an empty proto.QueryResult.Rows.
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…akesqldb always return non nil Rows in fakesqldb.Conn
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…sio#561) * Only start SQL thread temporarily to WaitForPosition if needed (vitessio#10104) After vitessio#9512 we always attempted to start the replication SQL_Thread(s) when waiting for a given position. The problem with this, however, is that if the SQL_Thread is running but the IO_Thread is not then the tablet repair does not try and start replication on a replica tablet. So in certain states such as when initializing a shard, replication may end up in a non-healthy state and never be repaired. This changes the behavior so that: 1. We only attempt to start the SQL_Thread(s) if it's not already running 2. If we explicitly start the SQL_Thread(s) then we also explicitly reset it to what it was (stopped) as we exit the call Because the caller should be/have a TabletManager which has a mutex, this should ensure that the replication manager calls are serialized and because we are resetting the replication state after mutating it, everything should work as it did before vitessio#9512 with the exception being that when waiting we ensure that the replica at least has the possibility of catching up. Signed-off-by: Matt Lord <mattalord@gmail.com> * Use older replication status interface As vitess-private does not have this: vitessio#9853 Signed-off-by: Matt Lord <mattalord@gmail.com>
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fakesqldb.Conn will not init proto.QueryResult.Rows if RowsAffected is zero.
However, according to go/mysql/mysql.go, the ideal response should be an empty
proto.QueryResult.Rows.