Impala does notsupport running on clusters with federated namespaces Impala does notsupport running on clusters with federated namespaces. The impalad processwill not start on a node running such a filesystem based on theorg.apache.hadoop.fs.viewfs.ViewFs class. ClouderaBug:https://issues.cloudera....
Not sure which version of impala, CDH you are using NANVL in-build function is available in oracle but impala does not support (as of CDH 5.14 version) Below is the link for CDH 5.14 shows all the available conditional functions, which has NVL, NVL2 but not NANVL. You may need to writ...
Impala does not yet support Hive GenericUDFs, so you cannot use Hive's mask functions in Impala. However, Impala has builtin mask functions that are implemented through overloads. In Impala, when using mask functions, not all parameter combinations are supported. These mask functions are introdu...
Even though Impala users can call Hive UDFs, Impala does not yet support Hive GenericUDFs, so you cannot use Hive's mask functions in Impala. However, Impala has builtin mask functions that are implemented through overloads. In Impala, when using mask functions, not all parameter combinations...
This guideline does not apply to coordinator-only nodes. Hardware Requirements for Optimal Join Performance During join operations, portions of data from each joined table are loaded into memory. Data sets can be very large, so ensure your hardware has sufficient memory to accommodate the joins yo...
In this case, modifying the storage location of the table partition does not take effect. When data is inserted, the storage location of the table is used. Create a partition table and specify the path for storing the table. create table table_name(id int,name string,company string) ...
-anonymous_user_name (Default username used when a client connects to an unsecured impala daemon and does not specify a username.) type: string default: "anonymous" -be_principal (Kerberos principal for backend network connections only,overriding --principal if set. Must not be set if --princi...
The connector does not modify the actual table definition. Performance Cloudera Impala supports static partitions. The Athena Cloudera Impala connector can retrieve data from these partitions in parallel. If you want to query very large datasets with uniform partition distribution, static partitioning ...
Device information: This type of information may not always be considered personal information, but we decided to keep it in to be as transparent as possible to you. Personal information does not include: • Publicly available information from government records. ...
If there is data connection authentication, you need to modify the URL in the above configuration information and add the AuthMech parameter after the URL. (No need to add this parameter when the database does not have a username and password) ...