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https://issues.apache.org/jira/browse/SPARK-19129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15822330#comment-15822330
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Xiao Li commented on SPARK-19129:
---------------------------------
This is a bug we need to fix. Let me try it. Thanks!
> alter table table_name drop partition with a empty string will drop the whole
> table
> -----------------------------------------------------------------------------------
>
> Key: SPARK-19129
> URL: https://issues.apache.org/jira/browse/SPARK-19129
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: lichenglin
> Labels: correctness
>
> {code}
> val spark = SparkSession
> .builder
> .appName("PartitionDropTest")
> .master("local[2]").enableHiveSupport()
> .getOrCreate()
> val sentenceData = spark.createDataFrame(Seq(
> (0, "a"),
> (1, "b"),
> (2, "c")))
> .toDF("id", "name")
> spark.sql("drop table if exists licllocal.partition_table")
>
> sentenceData.write.mode(SaveMode.Overwrite).partitionBy("id").saveAsTable("licllocal.partition_table")
> spark.sql("alter table licllocal.partition_table drop partition(id='')")
> spark.table("licllocal.partition_table").show()
> {code}
> the result is
> {code}
> |name| id|
> +----+---+
> +----+---+
> {code}
> Maybe the partition match have something wrong when the partition value is
> set to empty string
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