0. It is important to have partitions that match the period because dropping Kudu partitions is much more efficient than removing the data via the DELETE clause. On creating a Kudu table, you need to provide the columns and their types, of course, but Kudu needs information about partitioning and optionally for column encoding and compression. 0. You can create a table by querying any other table or tables in Impala, using a CREATE TABLE … AS SELECT statement.
OR REPLACE. How create a kudu table in cloudera quickstart VM. If a table with the same name already exists, the table will be replaced with the new configurations. The tables follow the same internal / external approach as other tables in Impala, allowing for flexible data ingestion and querying.
The following example imports all rows from an existing table old_table into a Kudu table new_table. The names and types of columns in new_table will determined from the columns in the result set of the SELECT statement.
That said, even without the Kudu's native HMS integration, in all versions of CDH, when using Impala "internal" or "managed" Kudu tables (see here for more details), Impala will create HMS metadata on behalf of Kudu. The java client for Kudu 0.10.0 does not work for me. Accessing Hive Tables with Spark SQL. Dropping the external Hive table will not remove the underlying Kudu table. When you create a Kudu table through Impala, it is assigned an internal Kudu table name of the form impala::db_name.table_name. CREATE TABLE kudu_employee_table (id BIGINT PRIMARY KEY, fname STRING, lname STRING) PARTITION BY HASH(id) PARTITIONS 2 STORED AS KUDU; Hash Partition: Hash partition distributed rows by hash value into N buckets. show create table If you have kudu installed you can create a kudu table, and move your data into kudu table,then you can use your update code. The below KUDU-SQL will have 1 million rows with 100 partitions = 10,000 rows per partition approximately.
Create the Kudu table, being mindful that the columns designated as primary keys cannot have null values.
You can see the Kudu-assigned name in the output of DESCRIBE FORMATTED, in the kudu.table_name field of the table properties. Until HIVE-22021 is completed, the EXTERNAL keyword is required and will create a Hive table that references an existing Kudu table. Currently, if a column comment is specified in a CREATE TABLE for a Kudu table, we just silently drop it because Kudu does not currently support column comments (KUDU-1711).One option would be to store the comments in HMS, but splitting the metadata between HMS and Kudu is … The table is range partitioned by the time column with each range containing one period of data. Note that you must additionally specify the primary key and …
You can use show create table to check your table type.
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