【Hive & Spark】修复分区

语法

MSCK REPAIR TABLE table_identifier [{ADD|DROP|SYNC} PARTITIONS]

msck repair table table_identifier 默认执行的是 add partitions操作

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ref: spark.apache.org/docs

Syntax
MSCK REPAIR TABLE table_identifier [{ADD|DROP|SYNC} PARTITIONS]
Parameters
table_identifier

Specifies the name of the table to be repaired. The table name may be optionally qualified with a database name.

Syntax: [ database_name. ] table_name

{ADD|DROP|SYNC} PARTITIONS

Specifies how to recover partitions. If not specified, ADD is the default.

ADD, the command adds new partitions to the session catalog for all sub-folder in the base table folder that don’t belong to any table partitions.
DROP, the command drops all partitions from the session catalog that have non-existing locations in the file system.
SYNC is the combination of DROP and ADD.