with as 语句真的会把数据存内存嘛？（源码剖析）

STAGE DEPENDENCIES:

 Stage-1 is a root stage

 Stage-6 depends on stages: Stage-1 , consists of Stage-3, Stage-2, Stage-4

 Stage-3

 Stage-0 depends on stages: Stage-3, Stage-2, Stage-5

 Stage-8 depends on stages: Stage-0

 Stage-2

 Stage-4

 Stage-5 depends on stages: Stage-4

 Stage-7 depends on stages: Stage-8

STAGE PLANS:

 Stage: Stage-1

  Map Reduce

   Map Operator Tree:

     TableScan

      alias: test

      Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE

      Select Operator

       expressions: id (type: int), source (type: string), channel (type: string)

       outputColumnNames: _col0, _col1, _col2

       Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE

       File Output Operator

        compressed: false

        Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE

        table:

          input format: org.apache.hadoop.mapred.TextInputFormat

          output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

          serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe

          name: default.atable

 Stage: Stage-6

  Conditional Operator

 Stage: Stage-3

  Move Operator

   files:

     hdfs directory: true

     destination: hdfs://localhost:9000/tmp/hive/bytedance/bae441cb-0ef6-4e9c-9f7a-8a5f97d0e560/_tmp_space.db/ce44793b-6eed-4299-b737-f05c66b2281b/.hive-staging_hive_2021-03-24_20-17-38_169_5695913330535939856-1/-ext-10002

 Stage: Stage-0

  Move Operator

   files:

     hdfs directory: true

     destination: hdfs://localhost:9000/tmp/hive/bytedance/bae441cb-0ef6-4e9c-9f7a-8a5f97d0e560/_tmp_space.db/ce44793b-6eed-4299-b737-f05c66b2281b

 Stage: Stage-8

  Map Reduce

   Map Operator Tree:

     TableScan

      alias: atable

      Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE

      Filter Operator

       predicate: (channel = '直播') (type: boolean)

       Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE

       Select Operator

        expressions: source (type: string)

        outputColumnNames: _col0

        Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE

        Union

         Statistics: Num rows: 2 Data size: 0 Basic stats: PARTIAL Column stats: NONE

         File Output Operator

          compressed: false

          Statistics: Num rows: 2 Data size: 0 Basic stats: PARTIAL Column stats: NONE

          table:

            input format: org.apache.hadoop.mapred.SequenceFileInputFormat

            output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat

            serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe

     TableScan

      alias: atable

      Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE

      Filter Operator

       predicate: (channel = '视频'外汇跟单gendan5.com) (type: boolean)

       Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE

       Select Operator

        expressions: source (type: string)

        outputColumnNames: _col0

        Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE

        Union

         Statistics: Num rows: 2 Data size: 0 Basic stats: PARTIAL Column stats: NONE

         File Output Operator

          compressed: false

          Statistics: Num rows: 2 Data size: 0 Basic stats: PARTIAL Column stats: NONE

          table:

            input format: org.apache.hadoop.mapred.SequenceFileInputFormat

            output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat

            serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe

 Stage: Stage-2

  Map Reduce

   Map Operator Tree:

     TableScan

      File Output Operator

       compressed: false

       table:

         input format: org.apache.hadoop.mapred.TextInputFormat

         output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

         serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe

         name: default.atable

 Stage: Stage-4

  Map Reduce

   Map Operator Tree:

     TableScan

      File Output Operator

       compressed: false

       table:

         input format: org.apache.hadoop.mapred.TextInputFormat

         output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

         serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe

         name: default.atable

 Stage: Stage-5

  Move Operator

   files:

     hdfs directory: true

     destination: hdfs://localhost:9000/tmp/hive/bytedance/bae441cb-0ef6-4e9c-9f7a-8a5f97d0e560/_tmp_space.db/ce44793b-6eed-4299-b737-f05c66b2281b/.hive-staging_hive_2021-03-24_20-17-38_169_5695913330535939856-1/-ext-10002

 Stage: Stage-7

  Fetch Operator

   limit: -1

   Processor Tree:

    ListSink