hive解释计划在哪里可以看到完整的表扫描？

r3i60tvu 于 2021-06-24 发布在 Hive

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我怎么能从Hive里看到 EXPLAIN 有全表扫描吗？
例如，是否有完整扫描？表格大小为993行。
查询是 explain select latitude,longitude FROM CRIMES WHERE geohash='dp3twhjuyutr' 我有二级索引 geohash 列。

STAGE PLANS:
      Stage: Stage-1
        Map Reduce
          Map Operator Tree:
              TableScan
                alias: crimes
                filterExpr: (geohash = 'dp3twhjuyutr') (type: boolean)
                Statistics: Num rows: 993 Data size: 265582 Basic stats: COMPLETE Column stats: NONE
                Filter Operator
                  predicate: (geohash = 'dp3twhjuyutr') (type: boolean)
                  Statistics: Num rows: 496 Data size: 132657 Basic stats: COMPLETE Column stats: NONE
                  Select Operator
                    expressions: latitude (type: double), longitude (type: double)
                    outputColumnNames: _col0, _col1
                    Statistics: Num rows: 496 Data size: 132657 Basic stats: COMPLETE Column stats: NONE
                    File Output Operator
                      compressed: false
                      Statistics: Num rows: 496 Data size: 132657 Basic stats: COMPLETE 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-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink