Package org.apache.hadoop.ozone.om.lock

Interface OzoneLockStrategy

All Known Implementing Classes:

OBSKeyPathLockStrategy, RegularBucketLockStrategy

public interface OzoneLockStrategy

This is a common strategy interface for all concrete lock strategies. The interface declares methods (for acquiring/releasing a read/write lock) the context (here OzoneManager class) uses to execute a lock strategy. The concrete lock strategies (which implement different variations of the methods defined in the interface) allow us in changing the behavior of the locking mechanism at runtime.

Method Summary

Modifier and Type	Method	Description
org.apache.hadoop.ozone.om.lock.OMLockDetails	acquireReadLock(org.apache.hadoop.ozone.om.OMMetadataManager omMetadataManager, String volumeName, String bucketName, String keyName)
org.apache.hadoop.ozone.om.lock.OMLockDetails	acquireWriteLock(org.apache.hadoop.ozone.om.OMMetadataManager omMetadataManager, String volumeName, String bucketName, String keyName)
org.apache.hadoop.ozone.om.lock.OMLockDetails	releaseReadLock(org.apache.hadoop.ozone.om.OMMetadataManager omMetadataManager, String volumeName, String bucketName, String keyName)
org.apache.hadoop.ozone.om.lock.OMLockDetails	releaseWriteLock(org.apache.hadoop.ozone.om.OMMetadataManager omMetadataManager, String volumeName, String bucketName, String keyName)

Method Details

acquireWriteLock

org.apache.hadoop.ozone.om.lock.OMLockDetails acquireWriteLock(org.apache.hadoop.ozone.om.OMMetadataManager omMetadataManager,
 String volumeName,
 String bucketName,
 String keyName)
                                                        throws IOException

Throws:

IOException

releaseWriteLock

org.apache.hadoop.ozone.om.lock.OMLockDetails releaseWriteLock(org.apache.hadoop.ozone.om.OMMetadataManager omMetadataManager,
 String volumeName,
 String bucketName,
 String keyName)

acquireReadLock

org.apache.hadoop.ozone.om.lock.OMLockDetails acquireReadLock(org.apache.hadoop.ozone.om.OMMetadataManager omMetadataManager,
 String volumeName,
 String bucketName,
 String keyName)
                                                       throws IOException

Throws:

IOException

releaseReadLock

org.apache.hadoop.ozone.om.lock.OMLockDetails releaseReadLock(org.apache.hadoop.ozone.om.OMMetadataManager omMetadataManager,
 String volumeName,
 String bucketName,
 String keyName)