la ruche - ajout d'un commentaire à une colonne de partition - Stack Overflow

I have the following hive table, where eventdate is the partition column:

hive> describe item_pages;
siteid                  int                     the site identifier for the host domain
externalsessionid       string                  the instrumented sessionid
item_pages              array<string>           an array of all distinct page IDs
eventdate               string                  None                

# Partition Information      
# col_name              data_type               comment             

eventdate               string                  None     

Is there a way that I can add a comment to the table metadata for the partition column? I get the following response when treating the eventdate partition column as a regular column:

hive> ALTER TABLE da_itempages CHANGE eventdate eventdate string COMMENT 'the PST calendar date of the item page views in YYYY-MM-DD format'
Column 'eventdate' does not exists
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask

(the example command is the exact same command the successfully inserted comments into the columns that have columns per the describe statement.)

I have the following hive table, where eventdate is the partition column:

hive> describe item_pages;
siteid                  int                     the site identifier for the host domain
externalsessionid       string                  the instrumented sessionid
item_pages              array<string>           an array of all distinct page IDs
eventdate               string                  None                

# Partition Information      
# col_name              data_type               comment             

eventdate               string                  None     

Is there a way that I can add a comment to the table metadata for the partition column? I get the following response when treating the eventdate partition column as a regular column:

hive> ALTER TABLE da_itempages CHANGE eventdate eventdate string COMMENT 'the PST calendar date of the item page views in YYYY-MM-DD format'
Column 'eventdate' does not exists
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask

(the example command is the exact same command the successfully inserted comments into the columns that have columns per the describe statement.)

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