在Hive中,我们可以通过在表的属性中设置TBLPROPERTIES来定义数据过期时间。具体而言,我们可以设置两个属性:transient_lastDdlTime和retention。 transient_lastDdlTime属性记录了最后一次DDL(数据定义语言)操作的时间。它用于计算数据的过期时间。当表的过期时间达到后,Hive会自动清理这些数据。 retention属性定义了数据的保留...
transient_lastDdlTime 1577804148 # Storage Information SerDe Library: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe InputFormat: org.apache.hadoop.mapred.TextInputFormat OutputFormat: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat Compressed: No Num Buckets: -1 Bucket Columns: [] ...
CreateTime: Sun Oct 20 08:03:29 CST 2019 LastAccessTime: UNKNOWN Protect Mode: None Retention: 0 Location: hdfs://mycluster/user/hive/warehouse/student2 Table Type: MANAGED_TABLE Table Parameters: transient_lastDdlTime 1571529809 # Storage Information SerDe Library: org.apache.hadoop.hive.serde2...
show TBLPROPERTIES table_name ('transient_lastDdlTime'); 不过,我和 ThriftHiveMetastore.client 在python中,我找不到任何关于ddl时间戳的信息。我指的是下列文件。我在用 hmsclient 它是thrifthivemetastore.client上的一个非常薄的 Package client = hmsclient.HMSClient(host='xxx', port=yyy) with client ...
-- 分区字段ROW FORMAT DELIMITEDFIELDS TERMINATED BY'\t'STORED AS INPUTFORMAT'org.apache.hadoop.mapred.TextInputFormat'OUTPUTFORMAT'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'LOCATION'hdfs:.../sales_info_test'TBLPROPERTIES ('transient_lastDdlTime'='15...
STORED AS INPUTFORMAT'org.apache.hadoop.mapred.TextInputFormat'OUTPUTFORMAT'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'LOCATION'hdfs://chinaol/apps/hive/warehouse/chinaoly_prod.db/t_tag_dm_rk'TBLPROPERTIES ('transient_lastDdlTime'='1557742726') ...
STORED AS INPUTFORMAT'org.apache.hadoop.mapred.TextInputFormat'OUTPUTFORMAT'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'LOCATION'hdfs://yjt:9000/hive/warehouse/test2'TBLPROPERTIES ('transient_lastDdlTime'='1593478235') 4、查看表的详细信息 ...
Time taken: 0.048 seconds hive (hive)> 1.3 修改数据库 用户可以使用 ALTER DATABASE 命令为某个数据库的 DBPROPERTIES 设置键-值对属性值,来描述这个数据库的属性信息。 hive (hive2)> desc database extended hive2; OK db_name comment location owner_name owner_type parameters ...
.MapredParquetInputFormat'OUTPUTFORMAT'org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormat'LOCATION'hdfs://ip-172-31-6-83.ap-southeast-1.compute.internal:8020/user/hive/warehouse/hive_table_test_parquet_snappy'TBLPROPERTIES('transient_lastDdlTime'='1557893659')Time taken:0.133seconds,...
TBLPROPERTIES ( 'COLUMN_STATS_ACCURATE'='true', 'numFiles'='1', 'numRows'='0', 'rawDataSize'='0', 'totalSize'='657', 'transient_lastDdlTime'='1529140756') Time taken: 0.245 seconds, Fetched: 24 row(s) 3.查询表信息(Describe Table) ...