org.apache.hadoop.hbase.client.Durability Maven / Gradle / Ivy
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*
* http://www.apache.org/licenses/LICENSE-2.0
*
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*/
package org.apache.hadoop.hbase.client;
import org.apache.yetus.audience.InterfaceAudience;
/**
* Enum describing the durability guarantees for tables and {@link Mutation}s Note that the items
* must be sorted in order of increasing durability
*/
@InterfaceAudience.Public
public enum Durability {
/* Developer note: Do not rename the enum field names. They are serialized in HTableDescriptor */
/**
* If this is for tables durability, use HBase's global default value (SYNC_WAL). Otherwise, if
* this is for mutation, use the table's default setting to determine durability. This must remain
* the first option.
*/
USE_DEFAULT,
/**
* Do not write the Mutation to the WAL
*/
SKIP_WAL,
/**
* Write the Mutation to the WAL asynchronously
*/
ASYNC_WAL,
/**
* Write the Mutation to the WAL synchronously. The data is flushed to the filesystem
* implementation, but not necessarily to disk. For HDFS this will flush the data to the
* designated number of DataNodes. See
* HADOOP-6313
*/
SYNC_WAL,
/**
* Write the Mutation to the WAL synchronously and force the entries to disk. See
* HADOOP-6313
*/
FSYNC_WAL
}