Hive 配置单元删除所有分区保留最近4天的分区

我有一个带有如下分区的表：

表日志分区（年=2019，月=06，日=18）

分区“年”、“月”和“日”采用字符串格式

我需要删除保留最后七天分区的分区。

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并且需要每周运行作业，以便日志表在每周开始时有7天的日志。

您可以使用我正在使用的：beeline-u“jdbc_连接字符串”-n hive-hivevar var_year=“$（date-d”days ago“+“%Y”）--hivevar var_month=“$（date-d”7天前“+“%m”）--hivevar_day=“$（date d”7天前“+“%d”）”-e“ALTER TABLE tablename DROP（如果存在分区）（part_yearwhat i want like..只保留当月最后7天的分区，并删除剩余的每个分区partition@Thilak是的，这是逻辑上的一个错误。需要添加更多的删除语句来删除当前年份中的“旧年”和“旧月”。已修复。非常感谢。还有一种情况。如果我们在月初实施此操作，如6月4日正在实施。运行后，我只想要6月1日、2日、3日、4日和5月31日、30日、29日。剩余的所有需要删除。@Thilak测试它。var_month=“$（date-d”7天前“+“%m”）”将设置为may，所有在may之前的内容将被前两句删除。最后一次删除将删除部分_month

use mydb;
drop table test_partition_drop;
CREATE TABLE test_partition_drop
(col1 STRING)
PARTITIONED BY (part_year string, part_month string, part_day string);
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2019', part_month='06', part_day='09') VALUES ('01');
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2019', part_month='06', part_day='10') VALUES ('01');
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2019', part_month='06', part_day=11) VALUES ('02');
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2019', part_month='06', part_day=12) VALUES ('03');
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2019', part_month='06', part_day=13) VALUES ('05');
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2019', part_month='06', part_day=14) VALUES ('06');
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2019', part_month='06', part_day=15) VALUES ('06');
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2018', part_month='06', part_day=14) VALUES ('01');
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2018', part_month='06', part_day=15) VALUES ('02');
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2019', part_month='05', part_day=14) VALUES ('03');
INSERT INTO TABLE  test_partition_drop PARTITION (part_year='2019', part_month='04', part_day=15) VALUES ('04');

var_year="$(date -d "7 days ago" +"%Y")"
var_month="$(date -d "7 days ago" +"%m")"
var_day="$(date -d "7 days ago" +"%d")"

hive -e "
use mydb;
ALTER TABLE test_partition_drop DROP IF EXISTS PARTITION (part_year<'${var_year}');
ALTER TABLE test_partition_drop DROP IF EXISTS PARTITION (part_year='${var_year}', part_month<'${var_month}'); 
ALTER TABLE test_partition_drop DROP IF EXISTS PARTITION (part_year='${var_year}', part_month<='${var_month}', part_day<='${var_day}');
"

OK
Time taken: 0.762 seconds
Dropped the partition part_year=2018/part_month=06/part_day=14
Dropped the partition part_year=2018/part_month=06/part_day=15
OK
Time taken: 1.643 seconds
Dropped the partition part_year=2019/part_month=04/part_day=15
Dropped the partition part_year=2019/part_month=05/part_day=14
OK
Time taken: 1.0 seconds
Dropped the partition part_year=2019/part_month=06/part_day=09
Dropped the partition part_year=2019/part_month=06/part_day=10
Dropped the partition part_year=2019/part_month=06/part_day=11
Dropped the partition part_year=2019/part_month=06/part_day=12
Dropped the partition part_year=2019/part_month=06/part_day=13
Dropped the partition part_year=2019/part_month=06/part_day=14
OK
Time taken: 2.097 seconds