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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/08/22 07:09:27 UTC
[GitHub] [spark] shahidki31 removed a comment on issue #24715:
[SPARK-25474][SQL] Data source tables support fallback to HDFS for size
estimation
shahidki31 removed a comment on issue #24715: [SPARK-25474][SQL] Data source tables support fallback to HDFS for size estimation
URL: https://github.com/apache/spark/pull/24715#issuecomment-523773058
```
scala> // enable fallBackToHdfs
scala> spark.sql("set spark.sql.statistics.fallBackToHdfs=true")
res4: org.apache.spark.sql.DataFrame = [key: string, value: string]
scala> spark.sql("EXPLAIN COST SELECT * FROM t3").show(false)
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|plan |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|== Optimized Logical Plan ==
Relation[c2#1,id#2] parquet, Statistics(sizeInBytes=8.0 EiB)
```
Why is sizeInBytes still 8 EiB, even after enabling the fallback configuration?
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