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Posted to issues@spark.apache.org by "webber (JIRA)" <ji...@apache.org> on 2019/02/19 07:40:00 UTC

[jira] [Created] (SPARK-26925) how to get the statistics when read from or writer to another database by datasourceV2

webber created SPARK-26925:
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             Summary: how to get the statistics when read  from or writer to  another database by datasourceV2
                 Key: SPARK-26925
                 URL: https://issues.apache.org/jira/browse/SPARK-26925
             Project: Spark
          Issue Type: Question
          Components: SQL
    Affects Versions: 2.4.0
            Reporter: webber


How to get the statistics when read  from or writer to  another database by datasourceV2. For example, when i read data from Rocksdb by datasourceV2,   i get a dataset, but also need the number of data.  If i want to know the number of the data, i must to do dataset.count(). In fact, i have  counted  the number when read from Rocksdb, but i cant feedback the infomation. Can you help me ?



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