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HDDS-2244. Use new ReadWrite lock in OzoneManager. (#1589)

This commit is contained in:
Bharat Viswanadham 2019-10-08 13:03:14 -07:00 committed by GitHub
parent 72ae371e7a
commit 87d9f3668c
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28 changed files with 232 additions and 123 deletions
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118
hadoop-ozone/common/src/main/java/org/apache/hadoop/ozone/om/lock/OzoneManagerLock.java
View File

@ -21,6 +21,7 @@
import java.util.ArrayList;
import java.util.List;
import java.util.function.Consumer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -75,6 +76,9 @@ public class OzoneManagerLock {
private static final Logger LOG =
LoggerFactory.getLogger(OzoneManagerLock.class);
private static final String READ_LOCK = "read";
private static final String WRITE_LOCK = "write";
private final LockManager<String> manager;
private final ThreadLocal<Short> lockSet = ThreadLocal.withInitial(
() -> Short.valueOf((short)0));
@ -105,15 +109,66 @@ public OzoneManagerLock(Configuration conf) {
* should be bucket name. For remaining all resource only one param should
* be passed.
*/
@Deprecated
public boolean acquireLock(Resource resource, String... resources) {
String resourceName = generateResourceName(resource, resources);
return lock(resource, resourceName, manager::writeLock, WRITE_LOCK);
}
/**
* Acquire read lock on resource.
*
* For S3_BUCKET_LOCK, VOLUME_LOCK, BUCKET_LOCK type resource, same
* thread acquiring lock again is allowed.
*
* For USER_LOCK, PREFIX_LOCK, S3_SECRET_LOCK type resource, same thread
* acquiring lock again is not allowed.
*
* Special Note for USER_LOCK: Single thread can acquire single user lock/
* multi user lock. But not both at the same time.
* @param resource - Type of the resource.
* @param resources - Resource names on which user want to acquire lock.
* For Resource type BUCKET_LOCK, first param should be volume, second param
* should be bucket name. For remaining all resource only one param should
* be passed.
*/
public boolean acquireReadLock(Resource resource, String... resources) {
String resourceName = generateResourceName(resource, resources);
return lock(resource, resourceName, manager::readLock, READ_LOCK);
}
/**
* Acquire write lock on resource.
*
* For S3_BUCKET_LOCK, VOLUME_LOCK, BUCKET_LOCK type resource, same
* thread acquiring lock again is allowed.
*
* For USER_LOCK, PREFIX_LOCK, S3_SECRET_LOCK type resource, same thread
* acquiring lock again is not allowed.
*
* Special Note for USER_LOCK: Single thread can acquire single user lock/
* multi user lock. But not both at the same time.
* @param resource - Type of the resource.
* @param resources - Resource names on which user want to acquire lock.
* For Resource type BUCKET_LOCK, first param should be volume, second param
* should be bucket name. For remaining all resource only one param should
* be passed.
*/
public boolean acquireWriteLock(Resource resource, String... resources) {
String resourceName = generateResourceName(resource, resources);
return lock(resource, resourceName, manager::writeLock, WRITE_LOCK);
}
private boolean lock(Resource resource, String resourceName,
Consumer<String> lockFn, String lockType) {
if (!resource.canLock(lockSet.get())) {
String errorMessage = getErrorMessage(resource);
LOG.error(errorMessage);
throw new RuntimeException(errorMessage);
} else {
manager.lock(resourceName);
LOG.debug("Acquired {} lock on resource {}", resource.name,
lockFn.accept(resourceName);
LOG.debug("Acquired {} {} lock on resource {}", lockType, resource.name,
resourceName);
lockSet.set(resource.setLock(lockSet.get()));
return true;
@ -197,19 +252,19 @@ public boolean acquireMultiUserLock(String firstUser, String secondUser) {
if (compare == 0) {
// both users are equal.
manager.lock(firstUser);
manager.writeLock(firstUser);
} else {
manager.lock(firstUser);
manager.writeLock(firstUser);
try {
manager.lock(secondUser);
manager.writeLock(secondUser);
} catch (Exception ex) {
// We got an exception acquiring 2nd user lock. Release already
// acquired user lock, and throw exception to the user.
manager.unlock(firstUser);
manager.writeUnlock(firstUser);
throw ex;
}
}
LOG.debug("Acquired {} lock on resource {} and {}", resource.name,
LOG.debug("Acquired Write {} lock on resource {} and {}", resource.name,
firstUser, secondUser);
lockSet.set(resource.setLock(lockSet.get()));
return true;
@ -240,35 +295,66 @@ public void releaseMultiUserLock(String firstUser, String secondUser) {
if (compare == 0) {
// both users are equal.
manager.unlock(firstUser);
manager.writeUnlock(firstUser);
} else {
manager.unlock(firstUser);
manager.unlock(secondUser);
manager.writeUnlock(firstUser);
manager.writeUnlock(secondUser);
}
LOG.debug("Release {} lock on resource {} and {}", resource.name,
LOG.debug("Release Write {} lock on resource {} and {}", resource.name,
firstUser, secondUser);
lockSet.set(resource.clearLock(lockSet.get()));
}
/**
* Release lock on resource.
* Release write lock on resource.
* @param resource - Type of the resource.
* @param resources - Resource names on which user want to acquire lock.
* For Resource type BUCKET_LOCK, first param should be volume, second param
* should be bucket name. For remaining all resource only one param should
* be passed.
*/
public void releaseWriteLock(Resource resource, String... resources) {
String resourceName = generateResourceName(resource, resources);
unlock(resource, resourceName, manager::writeUnlock, WRITE_LOCK);
}
/**
* Release read lock on resource.
* @param resource - Type of the resource.
* @param resources - Resource names on which user want to acquire lock.
* For Resource type BUCKET_LOCK, first param should be volume, second param
* should be bucket name. For remaining all resource only one param should
* be passed.
*/
public void releaseReadLock(Resource resource, String... resources) {
String resourceName = generateResourceName(resource, resources);
unlock(resource, resourceName, manager::readUnlock, READ_LOCK);
}
/**
* Release write lock on resource.
* @param resource - Type of the resource.
* @param resources - Resource names on which user want to acquire lock.
* For Resource type BUCKET_LOCK, first param should be volume, second param
* should be bucket name. For remaining all resource only one param should
* be passed.
*/
@Deprecated
public void releaseLock(Resource resource, String... resources) {
String resourceName = generateResourceName(resource, resources);
unlock(resource, resourceName, manager::writeUnlock, WRITE_LOCK);
}
private void unlock(Resource resource, String resourceName,
Consumer<String> lockFn, String lockType) {
// TODO: Not checking release of higher order level lock happened while
// releasing lower order level lock, as for that we need counter for
// locks, as some locks support acquiring lock again.
manager.unlock(resourceName);
lockFn.accept(resourceName);
// clear lock
LOG.debug("Release {}, lock on resource {}", resource.name,
resource.name, resourceName);
LOG.debug("Release {} {}, lock on resource {}", lockType, resource.name,
resourceName);
lockSet.set(resource.clearLock(lockSet.get()));
}
/**

13
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/BucketManagerImpl.java
View File

@ -219,7 +219,8 @@ public OmBucketInfo getBucketInfo(String volumeName, String bucketName)
throws IOException {
Preconditions.checkNotNull(volumeName);
Preconditions.checkNotNull(bucketName);
metadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName, bucketName);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volumeName,
bucketName);
try {
String bucketKey = metadataManager.getBucketKey(volumeName, bucketName);
OmBucketInfo value = metadataManager.getBucketTable().get(bucketKey);
@ -237,7 +238,7 @@ public OmBucketInfo getBucketInfo(String volumeName, String bucketName)
}
throw ex;
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volumeName,
bucketName);
}
}
@ -520,7 +521,7 @@ public List<OzoneAcl> getAcl(OzoneObj obj) throws IOException {
}
String volume = obj.getVolumeName();
String bucket = obj.getBucketName();
metadataManager.getLock().acquireLock(BUCKET_LOCK, volume, bucket);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volume, bucket);
try {
String dbBucketKey = metadataManager.getBucketKey(volume, bucket);
OmBucketInfo bucketInfo =
@ -538,7 +539,7 @@ public List<OzoneAcl> getAcl(OzoneObj obj) throws IOException {
}
throw ex;
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volume, bucket);
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volume, bucket);
}
}
@ -557,7 +558,7 @@ public boolean checkAccess(OzoneObj ozObject, RequestContext context)
String volume = ozObject.getVolumeName();
String bucket = ozObject.getBucketName();
metadataManager.getLock().acquireLock(BUCKET_LOCK, volume, bucket);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volume, bucket);
try {
String dbBucketKey = metadataManager.getBucketKey(volume, bucket);
OmBucketInfo bucketInfo =
@ -581,7 +582,7 @@ public boolean checkAccess(OzoneObj ozObject, RequestContext context)
throw new OMException("Check access operation failed for " +
"bucket:" + bucket, ex, INTERNAL_ERROR);
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volume, bucket);
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volume, bucket);
}
}
}

38
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/KeyManagerImpl.java
View File

@ -622,7 +622,8 @@ public OmKeyInfo lookupKey(OmKeyArgs args, String clientAddress)
String volumeName = args.getVolumeName();
String bucketName = args.getBucketName();
String keyName = args.getKeyName();
metadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName, bucketName);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volumeName,
bucketName);
try {
String keyBytes = metadataManager.getOzoneKey(
volumeName, bucketName, keyName);
@ -682,7 +683,7 @@ public OmKeyInfo lookupKey(OmKeyArgs args, String clientAddress)
throw new OMException(ex.getMessage(),
KEY_NOT_FOUND);
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volumeName,
bucketName);
}
}
@ -1311,7 +1312,8 @@ public OmMultipartUploadList listMultipartUploads(String volumeName,
Preconditions.checkNotNull(volumeName);
Preconditions.checkNotNull(bucketName);
metadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName, bucketName);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volumeName,
bucketName);
try {
List<String> multipartUploadKeys =
@ -1354,7 +1356,7 @@ public OmMultipartUploadList listMultipartUploads(String volumeName,
throw new OMException(ex.getMessage(), ResultCodes
.LIST_MULTIPART_UPLOAD_PARTS_FAILED);
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volumeName,
bucketName);
}
}
@ -1370,7 +1372,8 @@ public OmMultipartUploadListParts listParts(String volumeName,
boolean isTruncated = false;
int nextPartNumberMarker = 0;
metadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName, bucketName);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volumeName,
bucketName);
try {
String multipartKey = metadataManager.getMultipartKey(volumeName,
bucketName, keyName, uploadID);
@ -1457,7 +1460,7 @@ public OmMultipartUploadListParts listParts(String volumeName,
throw new OMException(ex.getMessage(), ResultCodes
.LIST_MULTIPART_UPLOAD_PARTS_FAILED);
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volumeName,
bucketName);
}
}
@ -1603,7 +1606,7 @@ public List<OzoneAcl> getAcl(OzoneObj obj) throws IOException {
String bucket = obj.getBucketName();
String keyName = obj.getKeyName();
metadataManager.getLock().acquireLock(BUCKET_LOCK, volume, bucket);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volume, bucket);
try {
validateBucket(volume, bucket);
String objectKey = metadataManager.getOzoneKey(volume, bucket, keyName);
@ -1620,7 +1623,7 @@ public List<OzoneAcl> getAcl(OzoneObj obj) throws IOException {
}
throw ex;
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volume, bucket);
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volume, bucket);
}
}
@ -1648,7 +1651,7 @@ public boolean checkAccess(OzoneObj ozObject, RequestContext context)
.setKeyName(keyName)
.build();
metadataManager.getLock().acquireLock(BUCKET_LOCK, volume, bucket);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volume, bucket);
try {
validateBucket(volume, bucket);
OmKeyInfo keyInfo = null;
@ -1687,7 +1690,7 @@ public boolean checkAccess(OzoneObj ozObject, RequestContext context)
throw new OMException("Check access operation failed for " +
"key:" + keyName, ex, INTERNAL_ERROR);
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volume, bucket);
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volume, bucket);
}
}
@ -1732,7 +1735,8 @@ public OzoneFileStatus getFileStatus(OmKeyArgs args) throws IOException {
String bucketName = args.getBucketName();
String keyName = args.getKeyName();
metadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName, bucketName);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volumeName,
bucketName);
try {
// Check if this is the root of the filesystem.
if (keyName.length() == 0) {
@ -1770,7 +1774,7 @@ public OzoneFileStatus getFileStatus(OmKeyArgs args) throws IOException {
volumeName + " bucket: " + bucketName + " key: " + keyName,
FILE_NOT_FOUND);
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volumeName,
bucketName);
}
}
@ -1915,7 +1919,8 @@ public OmKeyInfo lookupFile(OmKeyArgs args, String clientAddress)
String bucketName = args.getBucketName();
String keyName = args.getKeyName();
metadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName, bucketName);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volumeName,
bucketName);
try {
OzoneFileStatus fileStatus = getFileStatus(args);
if (fileStatus.isFile()) {
@ -1926,7 +1931,7 @@ public OmKeyInfo lookupFile(OmKeyArgs args, String clientAddress)
}
//if key is not of type file or if key is not found we throw an exception
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volumeName,
bucketName);
}
@ -1953,7 +1958,8 @@ public List<OzoneFileStatus> listStatus(OmKeyArgs args, boolean recursive,
String keyName = args.getKeyName();
List<OzoneFileStatus> fileStatusList = new ArrayList<>();
metadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName, bucketName);
metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volumeName,
bucketName);
try {
if (Strings.isNullOrEmpty(startKey)) {
OzoneFileStatus fileStatus = getFileStatus(args);
@ -2015,7 +2021,7 @@ public List<OzoneFileStatus> listStatus(OmKeyArgs args, boolean recursive,
}
}
} finally {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
metadataManager.getLock().releaseReadLock(BUCKET_LOCK, volumeName,
bucketName);
}
return fileStatusList;

12
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/VolumeManagerImpl.java
View File

@ -319,7 +319,7 @@ public void setQuota(String volume, long quota) throws IOException {
@Override
public OmVolumeArgs getVolumeInfo(String volume) throws IOException {
Preconditions.checkNotNull(volume);
metadataManager.getLock().acquireLock(VOLUME_LOCK, volume);
metadataManager.getLock().acquireReadLock(VOLUME_LOCK, volume);
try {
String dbVolumeKey = metadataManager.getVolumeKey(volume);
OmVolumeArgs volumeArgs =
@ -337,7 +337,7 @@ public OmVolumeArgs getVolumeInfo(String volume) throws IOException {
}
throw ex;
} finally {
metadataManager.getLock().releaseLock(VOLUME_LOCK, volume);
metadataManager.getLock().releaseReadLock(VOLUME_LOCK, volume);
}
}
@ -423,7 +423,7 @@ public boolean checkVolumeAccess(String volume, OzoneAclInfo userAcl)
throws IOException {
Preconditions.checkNotNull(volume);
Preconditions.checkNotNull(userAcl);
metadataManager.getLock().acquireLock(VOLUME_LOCK, volume);
metadataManager.getLock().acquireReadLock(VOLUME_LOCK, volume);
try {
String dbVolumeKey = metadataManager.getVolumeKey(volume);
OmVolumeArgs volumeArgs =
@ -443,7 +443,7 @@ public boolean checkVolumeAccess(String volume, OzoneAclInfo userAcl)
}
throw ex;
} finally {
metadataManager.getLock().releaseLock(VOLUME_LOCK, volume);
metadataManager.getLock().releaseReadLock(VOLUME_LOCK, volume);
}
}
@ -634,7 +634,7 @@ public List<OzoneAcl> getAcl(OzoneObj obj) throws IOException {
"VolumeManager. OzoneObj type:" + obj.getResourceType());
}
String volume = obj.getVolumeName();
metadataManager.getLock().acquireLock(VOLUME_LOCK, volume);
metadataManager.getLock().acquireReadLock(VOLUME_LOCK, volume);
try {
String dbVolumeKey = metadataManager.getVolumeKey(volume);
OmVolumeArgs volumeArgs =
@ -653,7 +653,7 @@ public List<OzoneAcl> getAcl(OzoneObj obj) throws IOException {
}
throw ex;
} finally {
metadataManager.getLock().releaseLock(VOLUME_LOCK, volume);
metadataManager.getLock().releaseReadLock(VOLUME_LOCK, volume);
}
}

12
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/bucket/OMBucketCreateRequest.java
View File

@ -148,10 +148,10 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
volumeName, bucketName, null);
}
acquiredVolumeLock = metadataManager.getLock().acquireLock(VOLUME_LOCK,
volumeName);
acquiredBucketLock = metadataManager.getLock().acquireLock(BUCKET_LOCK,
volumeName, bucketName);
acquiredVolumeLock =
metadataManager.getLock().acquireReadLock(VOLUME_LOCK, volumeName);
acquiredBucketLock = metadataManager.getLock().acquireWriteLock(
BUCKET_LOCK, volumeName, bucketName);
OmVolumeArgs omVolumeArgs =
metadataManager.getVolumeTable().get(volumeKey);
@ -191,11 +191,11 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredBucketLock) {
metadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
metadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
if (acquiredVolumeLock) {
metadataManager.getLock().releaseLock(VOLUME_LOCK, volumeName);
metadataManager.getLock().releaseReadLock(VOLUME_LOCK, volumeName);
}
}

16
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/bucket/OMBucketDeleteRequest.java
View File

@ -50,6 +50,7 @@
import org.apache.hadoop.hdds.utils.db.cache.CacheValue;
import static org.apache.hadoop.ozone.om.lock.OzoneManagerLock.Resource.BUCKET_LOCK;
import static org.apache.hadoop.ozone.om.lock.OzoneManagerLock.Resource.VOLUME_LOCK;
/**
* Handles DeleteBucket Request.
@ -87,7 +88,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
OzoneManagerProtocolProtos.UserInfo userInfo = getOmRequest().getUserInfo();
IOException exception = null;
boolean acquiredLock = false;
boolean acquiredBucketLock = false;
boolean acquiredVolumeLock = false;
OMClientResponse omClientResponse = null;
try {
// check Acl
@ -99,7 +101,10 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
// acquire lock
acquiredLock = omMetadataManager.getLock().acquireLock(BUCKET_LOCK,
acquiredVolumeLock =
omMetadataManager.getLock().acquireReadLock(VOLUME_LOCK, volumeName);
acquiredBucketLock =
omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK,
volumeName, bucketName);
// No need to check volume exists here, as bucket cannot be created
@ -142,10 +147,13 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
ozoneManagerDoubleBufferHelper.add(omClientResponse,
transactionLogIndex));
}
if (acquiredLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
if (acquiredBucketLock) {
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
if (acquiredVolumeLock) {
omMetadataManager.getLock().releaseReadLock(VOLUME_LOCK, volumeName);
}
}
// Performing audit logging outside of the lock.

13
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/bucket/OMBucketSetPropertyRequest.java
View File

@ -102,7 +102,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
AuditLogger auditLogger = ozoneManager.getAuditLogger();
OzoneManagerProtocolProtos.UserInfo userInfo = getOmRequest().getUserInfo();
IOException exception = null;
boolean acquiredLock = false;
boolean acquiredBucketLock = false;
OMClientResponse omClientResponse = null;
try {
// check Acl
@ -112,10 +112,9 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
volumeName, bucketName, null);
}
// acquire lock
acquiredLock = omMetadataManager.getLock().acquireLock(BUCKET_LOCK,
volumeName, bucketName);
// acquire lock.
acquiredBucketLock = omMetadataManager.getLock().acquireWriteLock(
BUCKET_LOCK, volumeName, bucketName);
String bucketKey = omMetadataManager.getBucketKey(volumeName, bucketName);
OmBucketInfo oldBucketInfo =
@ -181,8 +180,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
ozoneManagerDoubleBufferHelper.add(omClientResponse,
transactionLogIndex));
}
if (acquiredLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
if (acquiredBucketLock) {
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
}

6
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/bucket/acl/OMBucketAclRequest.java
View File

@ -91,7 +91,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
volume, null, null);
}
lockAcquired =
omMetadataManager.getLock().acquireLock(BUCKET_LOCK, volume, bucket);
omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK, volume,
bucket);
String dbBucketKey = omMetadataManager.getBucketKey(volume, bucket);
omBucketInfo = omMetadataManager.getBucketTable().get(dbBucketKey);
@ -120,7 +121,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (lockAcquired) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volume, bucket);
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volume,
bucket);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/file/OMDirectoryCreateRequest.java
View File

@ -136,7 +136,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
CreateDirectoryResponse.newBuilder()).build());
}
// acquire lock
acquiredLock = omMetadataManager.getLock().acquireLock(BUCKET_LOCK,
acquiredLock = omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK,
volumeName, bucketName);
// TODO: Not checking volume exist here, once we have full cache we can
@ -192,7 +192,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/file/OMFileCreateRequest.java
View File

@ -180,7 +180,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
checkBucketAcls(ozoneManager, volumeName, bucketName, keyName);
// acquire lock
acquiredLock = omMetadataManager.getLock().acquireLock(BUCKET_LOCK,
acquiredLock = omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK,
volumeName, bucketName);
OmBucketInfo bucketInfo =
@ -280,7 +280,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/key/OMKeyCommitRequest.java
View File

@ -127,7 +127,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
String dbOpenKey = omMetadataManager.getOpenKey(volumeName, bucketName,
keyName, commitKeyRequest.getClientID());
omMetadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK, volumeName,
bucketName);
validateBucketAndVolume(omMetadataManager, volumeName, bucketName);
@ -166,7 +166,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
ozoneManagerDoubleBufferHelper.add(omClientResponse,
transactionLogIndex));
}
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/key/OMKeyCreateRequest.java
View File

@ -164,7 +164,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
// check Acl
checkBucketAcls(ozoneManager, volumeName, bucketName, keyName);
acquireLock = omMetadataManager.getLock().acquireLock(BUCKET_LOCK,
acquireLock = omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK,
volumeName, bucketName);
validateBucketAndVolume(omMetadataManager, volumeName, bucketName);
//TODO: We can optimize this get here, if getKmsProvider is null, then
@ -198,7 +198,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquireLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/key/OMKeyDeleteRequest.java
View File

@ -114,7 +114,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
String objectKey = omMetadataManager.getOzoneKey(
volumeName, bucketName, keyName);
acquiredLock = omMetadataManager.getLock().acquireLock(BUCKET_LOCK,
acquiredLock = omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK,
volumeName, bucketName);
// Not doing bucket/volume checks here. In this way we can avoid db
@ -153,7 +153,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/key/OMKeyRenameRequest.java
View File

@ -120,7 +120,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
// check Acl
checkKeyAcls(ozoneManager, volumeName, bucketName, fromKeyName);
acquiredLock = omMetadataManager.getLock().acquireLock(BUCKET_LOCK,
acquiredLock = omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK,
volumeName, bucketName);
// Not doing bucket/volume checks here. In this way we can avoid db
@ -176,7 +176,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
}

6
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/key/acl/OMKeyAclRequest.java
View File

@ -81,7 +81,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
volume, bucket, key);
}
lockAcquired =
omMetadataManager.getLock().acquireLock(BUCKET_LOCK, volume, bucket);
omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK, volume,
bucket);
String dbKey = omMetadataManager.getOzoneKey(volume, bucket, key);
omKeyInfo = omMetadataManager.getKeyTable().get(dbKey);
@ -111,7 +112,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (lockAcquired) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volume, bucket);
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volume,
bucket);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/key/acl/prefix/OMPrefixAclRequest.java
View File

@ -81,7 +81,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
}
lockAcquired =
omMetadataManager.getLock().acquireLock(PREFIX_LOCK, prefixPath);
omMetadataManager.getLock().acquireWriteLock(PREFIX_LOCK, prefixPath);
omPrefixInfo = omMetadataManager.getPrefixTable().get(prefixPath);
@ -128,7 +128,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (lockAcquired) {
omMetadataManager.getLock().releaseLock(PREFIX_LOCK,
omMetadataManager.getLock().releaseWriteLock(PREFIX_LOCK,
getOzoneObj().getPath());
}
}

22
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/s3/bucket/S3BucketCreateRequest.java
View File

@ -153,8 +153,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
try {
// TODO to support S3 ACL later.
acquiredS3Lock = omMetadataManager.getLock().acquireLock(S3_BUCKET_LOCK,
s3BucketName);
acquiredS3Lock = omMetadataManager.getLock().acquireWriteLock(
S3_BUCKET_LOCK, s3BucketName);
// First check if this s3Bucket exists
if (omMetadataManager.getS3Table().isExist(s3BucketName)) {
@ -165,9 +165,10 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
OMVolumeCreateResponse omVolumeCreateResponse = null;
try {
acquiredVolumeLock =
omMetadataManager.getLock().acquireLock(VOLUME_LOCK, volumeName);
acquiredUserLock = omMetadataManager.getLock().acquireLock(USER_LOCK,
userName);
omMetadataManager.getLock().acquireWriteLock(VOLUME_LOCK,
volumeName);
acquiredUserLock = omMetadataManager.getLock().acquireWriteLock(
USER_LOCK, userName);
// Check if volume exists, if it does not exist create
// ozone volume.
String volumeKey = omMetadataManager.getVolumeKey(volumeName);
@ -188,10 +189,10 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
}
} finally {
if (acquiredUserLock) {
omMetadataManager.getLock().releaseLock(USER_LOCK, userName);
omMetadataManager.getLock().releaseWriteLock(USER_LOCK, userName);
}
if (acquiredVolumeLock) {
omMetadataManager.getLock().releaseLock(VOLUME_LOCK, volumeName);
omMetadataManager.getLock().releaseWriteLock(VOLUME_LOCK, volumeName);
}
}
@ -227,7 +228,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredS3Lock) {
omMetadataManager.getLock().releaseLock(S3_BUCKET_LOCK, s3BucketName);
omMetadataManager.getLock().releaseWriteLock(
S3_BUCKET_LOCK, s3BucketName);
}
}
@ -266,7 +268,7 @@ private OmBucketInfo createBucket(OMMetadataManager omMetadataManager,
OmBucketInfo omBucketInfo = null;
try {
acquireBucketLock =
omMetadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK, volumeName,
s3BucketName);
String bucketKey = omMetadataManager.getBucketKey(volumeName,
s3BucketName);
@ -285,7 +287,7 @@ private OmBucketInfo createBucket(OMMetadataManager omMetadataManager,
}
} finally {
if (acquireBucketLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
s3BucketName);
}
}

13
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/s3/bucket/S3BucketDeleteRequest.java
View File

@ -106,8 +106,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
OMClientResponse omClientResponse = null;
try {
// TODO to support S3 ACL later.
acquiredS3Lock = omMetadataManager.getLock().acquireLock(S3_BUCKET_LOCK,
s3BucketName);
acquiredS3Lock = omMetadataManager.getLock().acquireWriteLock(
S3_BUCKET_LOCK, s3BucketName);
String s3Mapping = omMetadataManager.getS3Table().get(s3BucketName);
@ -118,8 +118,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
volumeName = getOzoneVolumeName(s3Mapping);
acquiredBucketLock =
omMetadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName,
s3BucketName);
omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK,
volumeName, s3BucketName);
String bucketKey = omMetadataManager.getBucketKey(volumeName,
s3BucketName);
@ -149,11 +149,12 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredBucketLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
s3BucketName);
}
if (acquiredS3Lock) {
omMetadataManager.getLock().releaseLock(S3_BUCKET_LOCK, s3BucketName);
omMetadataManager.getLock().releaseWriteLock(S3_BUCKET_LOCK,
s3BucketName);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/s3/multipart/S3InitiateMultipartUploadRequest.java
View File

@ -114,7 +114,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
try {
// TODO to support S3 ACL later.
acquiredBucketLock =
omMetadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK, volumeName,
bucketName);
validateBucketAndVolume(omMetadataManager, volumeName, bucketName);
@ -189,7 +189,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredBucketLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/s3/multipart/S3MultipartUploadAbortRequest.java
View File

@ -99,7 +99,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
try {
// TODO to support S3 ACL later.
acquiredLock =
omMetadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK, volumeName,
bucketName);
validateBucketAndVolume(omMetadataManager, volumeName, bucketName);
@ -147,7 +147,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/s3/multipart/S3MultipartUploadCommitPartRequest.java
View File

@ -111,7 +111,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
try {
// TODO to support S3 ACL later.
acquiredLock =
omMetadataManager.getLock().acquireLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK, volumeName,
bucketName);
validateBucketAndVolume(omMetadataManager, volumeName, bucketName);
@ -203,7 +203,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/s3/multipart/S3MultipartUploadCompleteRequest.java
View File

@ -124,7 +124,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
multipartUploadList = new OmMultipartUploadCompleteList(partsMap);
acquiredLock = omMetadataManager.getLock().acquireLock(BUCKET_LOCK,
acquiredLock = omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK,
volumeName, bucketName);
validateBucketAndVolume(omMetadataManager, volumeName, bucketName);
@ -270,7 +270,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredLock) {
omMetadataManager.getLock().releaseLock(BUCKET_LOCK, volumeName,
omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName,
bucketName);
}
}

6
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/s3/security/S3GetSecretRequest.java
View File

@ -127,7 +127,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
try {
String awsSecret = updateGetS3SecretRequest.getAwsSecret();
acquiredLock =
omMetadataManager.getLock().acquireLock(S3_SECRET_LOCK, kerberosID);
omMetadataManager.getLock().acquireWriteLock(S3_SECRET_LOCK,
kerberosID);
S3SecretValue s3SecretValue =
omMetadataManager.getS3SecretTable().get(kerberosID);
@ -168,7 +169,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
omClientResponse, transactionLogIndex));
}
if (acquiredLock) {
omMetadataManager.getLock().releaseLock(S3_SECRET_LOCK, kerberosID);
omMetadataManager.getLock().releaseWriteLock(S3_SECRET_LOCK,
kerberosID);
}
}

10
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/volume/OMVolumeCreateRequest.java
View File

@ -135,10 +135,10 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
UserVolumeInfo volumeList = null;
// acquire lock.
acquiredVolumeLock = omMetadataManager.getLock().acquireLock(VOLUME_LOCK,
volume);
acquiredVolumeLock = omMetadataManager.getLock().acquireWriteLock(
VOLUME_LOCK, volume);
acquiredUserLock = omMetadataManager.getLock().acquireLock(USER_LOCK,
acquiredUserLock = omMetadataManager.getLock().acquireWriteLock(USER_LOCK,
owner);
String dbVolumeKey = omMetadataManager.getVolumeKey(volume);
@ -176,10 +176,10 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredUserLock) {
omMetadataManager.getLock().releaseLock(USER_LOCK, owner);
omMetadataManager.getLock().releaseWriteLock(USER_LOCK, owner);
}
if (acquiredVolumeLock) {
omMetadataManager.getLock().releaseLock(VOLUME_LOCK, volume);
omMetadataManager.getLock().releaseWriteLock(VOLUME_LOCK, volume);
}
}

10
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/volume/OMVolumeDeleteRequest.java
View File

@ -97,10 +97,10 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
OmVolumeArgs omVolumeArgs = null;
OzoneManagerProtocolProtos.UserVolumeInfo newVolumeList = null;
acquiredVolumeLock = omMetadataManager.getLock().acquireLock(VOLUME_LOCK,
volume);
acquiredVolumeLock = omMetadataManager.getLock().acquireWriteLock(
VOLUME_LOCK, volume);
owner = getVolumeInfo(omMetadataManager, volume).getOwnerName();
acquiredUserLock = omMetadataManager.getLock().acquireLock(USER_LOCK,
acquiredUserLock = omMetadataManager.getLock().acquireWriteLock(USER_LOCK,
owner);
String dbUserKey = omMetadataManager.getUserKey(owner);
@ -141,10 +141,10 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquiredUserLock) {
omMetadataManager.getLock().releaseLock(USER_LOCK, owner);
omMetadataManager.getLock().releaseWriteLock(USER_LOCK, owner);
}
if (acquiredVolumeLock) {
omMetadataManager.getLock().releaseLock(VOLUME_LOCK, volume);
omMetadataManager.getLock().releaseWriteLock(VOLUME_LOCK, volume);
}
}

6
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/volume/OMVolumeSetOwnerRequest.java
View File

@ -123,8 +123,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
acquiredVolumeLock = omMetadataManager.getLock().acquireLock(VOLUME_LOCK,
volume);
acquiredVolumeLock = omMetadataManager.getLock().acquireWriteLock(
VOLUME_LOCK, volume);
omVolumeArgs = omMetadataManager.getVolumeTable().get(dbVolumeKey);
@ -188,7 +188,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
omMetadataManager.getLock().releaseMultiUserLock(newOwner, oldOwner);
}
if (acquiredVolumeLock) {
omMetadataManager.getLock().releaseLock(VOLUME_LOCK, volume);
omMetadataManager.getLock().releaseWriteLock(VOLUME_LOCK, volume);
}
}

6
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/volume/OMVolumeSetQuotaRequest.java
View File

@ -114,8 +114,8 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
OmVolumeArgs omVolumeArgs = null;
acquireVolumeLock = omMetadataManager.getLock().acquireLock(VOLUME_LOCK,
volume);
acquireVolumeLock = omMetadataManager.getLock().acquireWriteLock(
VOLUME_LOCK, volume);
String dbVolumeKey = omMetadataManager.getVolumeKey(volume);
omVolumeArgs = omMetadataManager.getVolumeTable().get(dbVolumeKey);
@ -146,7 +146,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (acquireVolumeLock) {
omMetadataManager.getLock().releaseLock(VOLUME_LOCK, volume);
omMetadataManager.getLock().releaseWriteLock(VOLUME_LOCK, volume);
}
}

4
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/volume/acl/OMVolumeAclRequest.java
View File

@ -81,7 +81,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
volume, null, null);
}
lockAcquired =
omMetadataManager.getLock().acquireLock(VOLUME_LOCK, volume);
omMetadataManager.getLock().acquireWriteLock(VOLUME_LOCK, volume);
String dbVolumeKey = omMetadataManager.getVolumeKey(volume);
omVolumeArgs = omMetadataManager.getVolumeTable().get(dbVolumeKey);
if (omVolumeArgs == null) {
@ -115,7 +115,7 @@ public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager,
transactionLogIndex));
}
if (lockAcquired) {
omMetadataManager.getLock().releaseLock(VOLUME_LOCK, volume);
omMetadataManager.getLock().releaseWriteLock(VOLUME_LOCK, volume);
}
}