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Modify the table structure, delete a table, or add a table based on service requirements until the table metadata of all nodes in the cluster is consistent. After 5 minutes, check whether this alarm is cleared. If yes, no further action is required. If no, go to 5.
Run the vi /etc/fstab command to edit the file and delete the line containing DirName. Contact hardware engineers to insert a new disk. For details, see the hardware product document of the relevant model. If the faulty disk is in a RAID group, configure the RAID group.
Run the following command to delete unnecessary files. hdfs dfs -rm -r -f File or directory path Deleting a file or folder is a high-risk operation. Ensure that the file or folder is no longer required before performing this operation.
You can delete the comment by setting the comment information to NULL.
Value options are as follows: upsert: updates and inserts data. delete: deletes data. insert: inserts data. bulk_insert: imports data during initial table creation.
public void testSQL() { String tableName = "TEST"; // Create table String createTableSQL = "CREATE TABLE IF NOT EXISTS TEST(id integer not null primary key, name varchar, account char(6), birth date)"; // Delete
public void testSQL() { String tableName = "TEST"; // Create table String createTableSQL = "CREATE TABLE IF NOT EXISTS TEST(id integer not null primary key, name varchar, account char(6), birth date)"; // Delete
public void testSQL() { String tableName = "TEST"; // Create table String createTableSQL = "CREATE TABLE IF NOT EXISTS TEST(id integer not null primary key, name varchar, account char(6), birth date)"; // Delete
Only users in the kafkaadmin group can delete topics. Cause Analysis After the client command is run, the "NoAuthException" exception is reported.
Deleting an HBase Global Secondary Index Run the following command on the HBase client to delete an index: hbase org.apache.hadoop.hbase.hindex.global.mapreduce.GlobalTableIndexer -Dtablename.to.index='table' -Dindexnames.to.drop='idx1#idx2' The parameters are described as follows
String │ │ │ │ │ │ │ test01 │ String │ DEFAULT │ 'defaultvalue' │ │ │ │ └───────┴────┴────────┴────────── ┴───── ┴──────────┴─────────┘ -- Delete
If a Hive table is deleted or the data structure of an existing table is modified, manually delete the table from the destination cluster or manually update the table structure. Parent topic: Data Migration
String │ │ │ │ │ │ │ test01 │ String │ DEFAULT │ 'defaultvalue' │ │ │ │ └───────┴────┴────────┴────────── ┴───── ┴──────────┴─────────┘ -- Delete
Run the following command to go to the QAS data directory and delete temporary files as required: cd ${BIGDATA_DATA_HOME}/hetuengine/qas Deleting temporary files affects the latest QAS execution result but does not affect subsequent results.
Delete the -XX:MaxDirectMemorySize parameter from GC_OPTS and save the configuration. MaxDirectMemorySize indicates the maximum off-heap memory size. If the MaxDirectMemorySize parameter of ResourceManager is not specified, the memory of ResourceManager is not limited.
Choose HMaster/RegionServer > System and delete XX:MaxDirectMemorySize from GC_OPTS. Check whether the ALM-19008 Heap Memory Usage of the HBase Process Exceeds the Threshold alarm is generated.
Run the following command to open the postgresql.conf file: vi ${DBSERVICE_DATA_DIR}/postgresql.conf Delete default_transaction_read_only = on.
In this sample, a custom JDBCServer client and JDBC connections are used to create, load data to, query, and delete tables.
In the default database, select Delete and Insert to import data to tables of other users.
AUTOMATIC Click Delete to delete custom configuration parameters.
