我运行了带有和不带smb join的查询，得到了不同的结果。请帮忙解释一下。

SET hive.enforce.bucketing=true;

create table dbaproceduresbuckets (
owner           string ,
object_name     string ,
procedure_name  string ,
object_id       double ,
subprogram_id   double ,
overload        string ,
object_type     string ,
aggregate       string ,
pipelined       string ,
impltypeowner   string ,
impltypename    string ,
parallel        string ,
interface       string ,
deterministic   string ,
authid          string )
CLUSTERED BY (object_id) SORTED BY (OBJECT_ID ASC) INTO 32 BUCKETS;

CREATE TABLE dbaobjectsbuckets1(
owner            string,
object_name      string,
subobject_name   string,
object_id        double,
data_object_id   double,
object_type      string,
created          string,
last_ddl_time    string,
timestamp        string,
status           string,
temporary        string,
generated        string,
secondary        string,
namespace        double,
edition_name     string) CLUSTERED BY (object_id) SORTED BY (OBJECT_ID ASC) INTO 32 BUCKETS;

****load the table;

0: jdbc:hive2://:10000>从dbaobjectsbuckets1 a，dbaproceduresbuckets b0中选择count（*）：jdbc:hive2://xx:10000>其中a.object\u id=b.object\u id；信息：阶段2的hadoop作业信息：Map器数量：3；减速器数量：1信息：2016-06-13 15:56:00381第二阶段map=0%，减速=0%信息：2016-06-13 15:56:55818第二阶段map=1%，减速=0%，累计cpu 122.6秒信息：2016-06-13 15:57:47124第二阶段map=7%，减速=0%，累计cpu 326.86秒。。。。。。。。。。信息：2016-06-13 16:05:01246 stage-2 map=100%，reduce=100%，累计cpu 867.1秒信息：mapreduce累计cpu总时间：14分27秒100毫秒信息：结束作业=job1464280256859_0146+