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OBS GaussDB(DWS) uses OBS to convert cluster data and external data, satisfying the requirements for secure, reliable, and cost-effective storage. MRS Data can be migrated from MRS to GaussDB(DWS) clusters for analysis after the data is processed by Hadoop.
The foreign server associated with the table is hdfs_server, the format of the file on HDFS corresponding to the table is ORC, and the data storage path on OBS is /user/hive/warehouse/product_info_orc/.
Servers whose type is lf, dli, obs, or hdfs can be associated. For details, see CREATE SERVER. CATALOG Catalog to be accessed in LakeFormation.
Schema Is Granted to a User, the User Still Cannot Query the Tables How Do I Revoke the Permission of a User If grant select on table t1 to public Has Been Executed on a Table An Error Message Is Displayed When a Common User Executes the Statement for Creating or Deleting a GDS or OBS
Snapshots whose backup device is OBS can be backed up. Only a snapshot in the Available state can be used for restoration. Logical clusters and resource pools cannot be restored to the current cluster. Procedure Log in to the GaussDB(DWS) console. Choose Management > Snapshots.
OBS I/O indicates details about an OBS I/O request. (supported by V3 tables or foreign tables with storage and compute decoupled) count indicates the total number of OBS I/O requests. averageRTT indicates the average round trip time (RTT) of OBS I/O requests.
GDS Foreign Table and An Error Is Reported Indicating that ROUNDROBIN Is Not Supported When CDM Is Used to Import MySQL Data to GaussDB(DWS), the Column Length Exceeds the Threshold and Data Synchronization Fails "Access Denied" Is Displayed When the SQL Statement for Creating an OBS
cluster. errhint: You need to define at least 1 Datanode with CREATE NODE. level:ERROR GS_225120023 errmsg:Statistics in some tables or columns(%s) are not collected. errhint: Do analyze for them in order to generate optimized plan. evel: level GS_225120024 errmsg:Statistics in some obs
Analyzing a Table ANALYZE supports row-store, column-store, HDFS, and OBS tables in ORC or CARBONDATA format. ANALYZE can also collect statistics about specified columns of a local table.
However, if you use more space than the free-of-charge storage space, the exceeded part is charged according to OBS billing rules. For details, see the OBS pricing details.
Currently, you can only use the snapshots stored in OBS to restore data to a new cluster. By default, the new cluster created during restoration has the same specifications and node quantity as the original cluster.
Check whether OBS is running properly. If it is, contact technical support to check whether the dms-agent process is normal. DWS.13009 The OBS storage space is insufficient. Ensure the OBS storage space is sufficient. DWS.0107 DN REDO is being executed. Try again later.
Check whether OBS is running properly. If it is, contact technical support to check whether the dms-agent process is normal. DWS.13009 The OBS storage space is insufficient. Ensure the OBS storage space is sufficient. DWS.0107 DN REDO is being executed. Try again later.
Transferring Data to OBS Raw data of metrics is kept for two days on Cloud Eye. You can enable OBS and save the raw data to OBS so that it can be saved for a longer time.
CREATE DATABASE OBS foreign tables support XSKY S3. OBS foreign tables are adapted to XSKY and the parameter eol is added. CREATE FOREIGN TABLE (SQL on Hadoop or OBS) SQL supports Roaring Bitmaps.
Scan operation hints can be used for row-store tables, column-store tables, HDFS tables, HDFS foreign tables, OBS tables, and subquery tables. HDFS tables include primary tables and delta tables. The delta tables are invisible to users.
However, if you use more space than the free-of-charge storage space, the exceeded part is charged according to OBS billing rules. For details, see the OBS pricing details.
This section describes how to import sample data from OBS to a data warehouse cluster and perform querying and analysis operations on the sample data. The sample data is generated based on the standard TPC-DS benchmark test.
Type: USERSET Value range: a string Default value: OBS, HADOOP and REMOTE_DATANODE are enabled. MD is disabled. You can run the SHOW profile_logging_module command to view the value.
Type: USERSET Value range: a string Default value: OBS, HADOOP and REMOTE_DATANODE are enabled. MD is disabled. You can run the SHOW profile_logging_module command to view the value.
