HDFS-8712. Remove 'public' and 'abstract' modifiers in FsVolumeSpi and FsDatasetSpi (Contributed by Lei (Eddy) Xu)
(cherry picked from commit bd4e10900c)
Conflicts:
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/FsDatasetSpi.java
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/FsVolumeSpi.java
This commit is contained in:
Vinayakumar B
parent
01e12b7d69
commit
6fe2e7c3f3
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@ -368,6 +368,9 @@ Release 2.8.0 - UNRELEASED
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HDFS-8620. Clean up the checkstyle warinings about ClientProtocol.
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(Takanobu Asanuma via wheat9)
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HDFS-8712. Remove 'public' and 'abstracta modifiers in FsVolumeSpi and
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FsDatasetSpi (Lei (Eddy) Xu via vinayakumarb)
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OPTIMIZATIONS
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HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than
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@ -72,7 +72,7 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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/**
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* A factory for creating {@link FsDatasetSpi} objects.
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*/
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public static abstract class Factory<D extends FsDatasetSpi<?>> {
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abstract class Factory<D extends FsDatasetSpi<?>> {
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/** @return the configured factory. */
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public static Factory<?> getFactory(Configuration conf) {
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@SuppressWarnings("rawtypes")
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@ -182,7 +182,7 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* The caller must release the reference of each volume by calling
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* {@link FsVolumeReferences#close()}.
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*/
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public FsVolumeReferences getFsVolumeReferences();
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FsVolumeReferences getFsVolumeReferences();
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/**
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* Add a new volume to the FsDataset.<p/>
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@ -193,7 +193,7 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @param location The storage location for the new volume.
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* @param nsInfos Namespace information for the new volume.
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*/
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public void addVolume(
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void addVolume(
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final StorageLocation location,
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final List<NamespaceInfo> nsInfos) throws IOException;
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@ -207,20 +207,20 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @param clearFailure set true to clear the failure information about the
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* volumes.
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*/
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public void removeVolumes(Set<File> volumes, boolean clearFailure);
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void removeVolumes(Set<File> volumes, boolean clearFailure);
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/** @return a storage with the given storage ID */
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public DatanodeStorage getStorage(final String storageUuid);
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DatanodeStorage getStorage(final String storageUuid);
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/** @return one or more storage reports for attached volumes. */
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public StorageReport[] getStorageReports(String bpid)
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StorageReport[] getStorageReports(String bpid)
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throws IOException;
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/** @return the volume that contains a replica of the block. */
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public V getVolume(ExtendedBlock b);
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V getVolume(ExtendedBlock b);
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/** @return a volume information map (name => info). */
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public Map<String, Object> getVolumeInfoMap();
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Map<String, Object> getVolumeInfoMap();
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/**
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* Returns info about volume failures.
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@ -230,17 +230,17 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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VolumeFailureSummary getVolumeFailureSummary();
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/** @return a list of finalized blocks for the given block pool. */
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public List<FinalizedReplica> getFinalizedBlocks(String bpid);
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List<FinalizedReplica> getFinalizedBlocks(String bpid);
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/** @return a list of finalized blocks for the given block pool. */
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public List<FinalizedReplica> getFinalizedBlocksOnPersistentStorage(String bpid);
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List<FinalizedReplica> getFinalizedBlocksOnPersistentStorage(String bpid);
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/**
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* Check whether the in-memory block record matches the block on the disk,
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* and, in case that they are not matched, update the record or mark it
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* as corrupted.
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*/
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public void checkAndUpdate(String bpid, long blockId, File diskFile,
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void checkAndUpdate(String bpid, long blockId, File diskFile,
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File diskMetaFile, FsVolumeSpi vol) throws IOException;
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/**
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@ -249,15 +249,15 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* otherwise, return null.
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* @throws IOException
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*/
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public LengthInputStream getMetaDataInputStream(ExtendedBlock b
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LengthInputStream getMetaDataInputStream(ExtendedBlock b
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) throws IOException;
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/**
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* Returns the specified block's on-disk length (excluding metadata)
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* Returns the specified block's on-disk length (excluding metadata).
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* @return the specified block's on-disk length (excluding metadta)
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* @throws IOException on error
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*/
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public long getLength(ExtendedBlock b) throws IOException;
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long getLength(ExtendedBlock b) throws IOException;
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/**
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* Get reference to the replica meta info in the replicasMap.
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@ -265,47 +265,48 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @return replica from the replicas map
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*/
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@Deprecated
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public Replica getReplica(String bpid, long blockId);
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Replica getReplica(String bpid, long blockId);
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/**
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* @return replica meta information
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*/
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public String getReplicaString(String bpid, long blockId);
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String getReplicaString(String bpid, long blockId);
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/**
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* @return the generation stamp stored with the block.
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*/
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public Block getStoredBlock(String bpid, long blkid) throws IOException;
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Block getStoredBlock(String bpid, long blkid) throws IOException;
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/**
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* Returns an input stream at specified offset of the specified block
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* Returns an input stream at specified offset of the specified block.
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* @param b block
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* @param seekOffset offset with in the block to seek to
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* @return an input stream to read the contents of the specified block,
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* starting at the offset
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* @throws IOException
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*/
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public InputStream getBlockInputStream(ExtendedBlock b, long seekOffset)
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InputStream getBlockInputStream(ExtendedBlock b, long seekOffset)
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throws IOException;
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/**
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* Returns an input stream at specified offset of the specified block
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* Returns an input stream at specified offset of the specified block.
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* The block is still in the tmp directory and is not finalized
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* @return an input stream to read the contents of the specified block,
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* starting at the offset
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* @throws IOException
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*/
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public ReplicaInputStreams getTmpInputStreams(ExtendedBlock b, long blkoff,
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ReplicaInputStreams getTmpInputStreams(ExtendedBlock b, long blkoff,
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long ckoff) throws IOException;
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/**
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* Creates a temporary replica and returns the meta information of the replica
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* .
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*
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* @param b block
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* @return the meta info of the replica which is being written to
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* @throws IOException if an error occurs
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*/
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public ReplicaHandler createTemporary(StorageType storageType,
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ReplicaHandler createTemporary(StorageType storageType,
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ExtendedBlock b) throws IOException;
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/**
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@ -315,11 +316,11 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @return the meta info of the replica which is being written to
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* @throws IOException if an error occurs
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*/
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public ReplicaHandler createRbw(StorageType storageType,
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ReplicaHandler createRbw(StorageType storageType,
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ExtendedBlock b, boolean allowLazyPersist) throws IOException;
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/**
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* Recovers a RBW replica and returns the meta info of the replica
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* Recovers a RBW replica and returns the meta info of the replica.
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*
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* @param b block
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* @param newGS the new generation stamp for the replica
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@ -328,7 +329,7 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @return the meta info of the replica which is being written to
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* @throws IOException if an error occurs
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*/
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public ReplicaHandler recoverRbw(ExtendedBlock b,
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ReplicaHandler recoverRbw(ExtendedBlock b,
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long newGS, long minBytesRcvd, long maxBytesRcvd) throws IOException;
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/**
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@ -336,11 +337,11 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @param temporary the temporary replica being converted
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* @return the result RBW
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*/
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public ReplicaInPipelineInterface convertTemporaryToRbw(
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ReplicaInPipelineInterface convertTemporaryToRbw(
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ExtendedBlock temporary) throws IOException;
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/**
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* Append to a finalized replica and returns the meta info of the replica
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* Append to a finalized replica and returns the meta info of the replica.
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*
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* @param b block
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* @param newGS the new generation stamp for the replica
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@ -348,12 +349,12 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @return the meata info of the replica which is being written to
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* @throws IOException
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*/
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public ReplicaHandler append(ExtendedBlock b, long newGS,
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ReplicaHandler append(ExtendedBlock b, long newGS,
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long expectedBlockLen) throws IOException;
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/**
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* Recover a failed append to a finalized replica
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* and returns the meta info of the replica
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* Recover a failed append to a finalized replica and returns the meta
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* info of the replica.
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*
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* @param b block
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* @param newGS the new generation stamp for the replica
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@ -361,11 +362,11 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @return the meta info of the replica which is being written to
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* @throws IOException
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*/
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public ReplicaHandler recoverAppend(
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ReplicaHandler recoverAppend(
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ExtendedBlock b, long newGS, long expectedBlockLen) throws IOException;
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/**
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* Recover a failed pipeline close
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* Recover a failed pipeline close.
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* It bumps the replica's generation stamp and finalize it if RBW replica
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*
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* @param b block
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@ -374,7 +375,7 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @return the storage uuid of the replica.
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* @throws IOException
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*/
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public String recoverClose(ExtendedBlock b, long newGS, long expectedBlockLen
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String recoverClose(ExtendedBlock b, long newGS, long expectedBlockLen
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) throws IOException;
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/**
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@ -386,21 +387,21 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* block is been finalized. For instance, the block resides on an HDFS volume
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* that has been removed.
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*/
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public void finalizeBlock(ExtendedBlock b) throws IOException;
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void finalizeBlock(ExtendedBlock b) throws IOException;
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/**
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* Unfinalizes the block previously opened for writing using writeToBlock.
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* The temporary file associated with this block is deleted.
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* @throws IOException
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*/
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public void unfinalizeBlock(ExtendedBlock b) throws IOException;
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void unfinalizeBlock(ExtendedBlock b) throws IOException;
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/**
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* Returns one block report per volume.
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* @param bpid Block Pool Id
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* @return - a map of DatanodeStorage to block report for the volume.
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*/
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public Map<DatanodeStorage, BlockListAsLongs> getBlockReports(String bpid);
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Map<DatanodeStorage, BlockListAsLongs> getBlockReports(String bpid);
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/**
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* Returns the cache report - the full list of cached block IDs of a
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@ -408,10 +409,10 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @param bpid Block Pool Id
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* @return the cache report - the full list of cached block IDs.
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*/
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public List<Long> getCacheReport(String bpid);
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List<Long> getCacheReport(String bpid);
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/** Does the dataset contain the block? */
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public boolean contains(ExtendedBlock block);
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boolean contains(ExtendedBlock block);
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/**
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* Check if a block is valid.
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@ -431,7 +432,7 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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*
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* @throws IOException May be thrown from the methods called.
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*/
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public void checkBlock(ExtendedBlock b, long minLength, ReplicaState state)
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void checkBlock(ExtendedBlock b, long minLength, ReplicaState state)
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throws ReplicaNotFoundException, UnexpectedReplicaStateException,
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FileNotFoundException, EOFException, IOException;
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@ -440,13 +441,13 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* Is the block valid?
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* @return - true if the specified block is valid
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*/
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public boolean isValidBlock(ExtendedBlock b);
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boolean isValidBlock(ExtendedBlock b);
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/**
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* Is the block a valid RBW?
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* @return - true if the specified block is a valid RBW
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*/
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public boolean isValidRbw(ExtendedBlock b);
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boolean isValidRbw(ExtendedBlock b);
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/**
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* Invalidates the specified blocks
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@ -454,21 +455,21 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @param invalidBlks - the blocks to be invalidated
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* @throws IOException
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*/
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public void invalidate(String bpid, Block invalidBlks[]) throws IOException;
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void invalidate(String bpid, Block invalidBlks[]) throws IOException;
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/**
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* Caches the specified blocks
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* @param bpid Block pool id
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* @param blockIds - block ids to cache
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*/
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public void cache(String bpid, long[] blockIds);
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void cache(String bpid, long[] blockIds);
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/**
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* Uncaches the specified blocks
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* @param bpid Block pool id
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* @param blockIds - blocks ids to uncache
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*/
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public void uncache(String bpid, long[] blockIds);
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void uncache(String bpid, long[] blockIds);
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/**
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* Determine if the specified block is cached.
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@ -476,18 +477,18 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @param blockIds - block id
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* @return true if the block is cached
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*/
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public boolean isCached(String bpid, long blockId);
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boolean isCached(String bpid, long blockId);
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/**
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* Check if all the data directories are healthy
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* @return A set of unhealthy data directories.
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*/
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public Set<File> checkDataDir();
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Set<File> checkDataDir();
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/**
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* Shutdown the FSDataset
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*/
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public void shutdown();
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void shutdown();
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/**
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* Sets the file pointer of the checksum stream so that the last checksum
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@ -497,7 +498,7 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @param checksumSize number of bytes each checksum has
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* @throws IOException
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*/
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public void adjustCrcChannelPosition(ExtendedBlock b,
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void adjustCrcChannelPosition(ExtendedBlock b,
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ReplicaOutputStreams outs, int checksumSize) throws IOException;
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/**
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@ -505,7 +506,7 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @return true if more than the minimum number of valid volumes are left
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* in the FSDataSet.
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*/
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public boolean hasEnoughResource();
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boolean hasEnoughResource();
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/**
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* Get visible length of the specified replica.
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@ -517,14 +518,14 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @return actual state of the replica on this data-node or
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* null if data-node does not have the replica.
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*/
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public ReplicaRecoveryInfo initReplicaRecovery(RecoveringBlock rBlock
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ReplicaRecoveryInfo initReplicaRecovery(RecoveringBlock rBlock
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) throws IOException;
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/**
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* Update replica's generation stamp and length and finalize it.
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* @return the ID of storage that stores the block
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*/
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public String updateReplicaUnderRecovery(ExtendedBlock oldBlock,
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String updateReplicaUnderRecovery(ExtendedBlock oldBlock,
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long recoveryId, long newBlockId, long newLength) throws IOException;
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/**
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@ -532,13 +533,13 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @param bpid Block pool Id
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* @param conf Configuration
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*/
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public void addBlockPool(String bpid, Configuration conf) throws IOException;
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void addBlockPool(String bpid, Configuration conf) throws IOException;
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/**
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* Shutdown and remove the block pool from underlying storage.
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* @param bpid Block pool Id to be removed
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*/
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public void shutdownBlockPool(String bpid) ;
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void shutdownBlockPool(String bpid) ;
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/**
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* Deletes the block pool directories. If force is false, directories are
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@ -551,12 +552,12 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* directory for the blockpool is deleted along with its contents.
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* @throws IOException
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*/
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public void deleteBlockPool(String bpid, boolean force) throws IOException;
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void deleteBlockPool(String bpid, boolean force) throws IOException;
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/**
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* Get {@link BlockLocalPathInfo} for the given block.
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*/
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public BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock b
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BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock b
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) throws IOException;
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/**
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@ -568,7 +569,7 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* @return metadata Metadata for the list of blocks
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* @throws IOException
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*/
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public HdfsBlocksMetadata getHdfsBlocksMetadata(String bpid,
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HdfsBlocksMetadata getHdfsBlocksMetadata(String bpid,
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long[] blockIds) throws IOException;
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/**
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@ -576,51 +577,51 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
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* moved to a separate trash directory instead of being deleted immediately.
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* This can be useful for example during rolling upgrades.
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*/
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public void enableTrash(String bpid);
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void enableTrash(String bpid);
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/**
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* Clear trash
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*/
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||||
public void clearTrash(String bpid);
|
||||
void clearTrash(String bpid);
|
||||
|
||||
/**
|
||||
* @return true when trash is enabled
|
||||
*/
|
||||
public boolean trashEnabled(String bpid);
|
||||
boolean trashEnabled(String bpid);
|
||||
|
||||
/**
|
||||
* Create a marker file indicating that a rolling upgrade is in progress.
|
||||
*/
|
||||
public void setRollingUpgradeMarker(String bpid) throws IOException;
|
||||
void setRollingUpgradeMarker(String bpid) throws IOException;
|
||||
|
||||
/**
|
||||
* Delete the rolling upgrade marker file if it exists.
|
||||
* @param bpid
|
||||
*/
|
||||
public void clearRollingUpgradeMarker(String bpid) throws IOException;
|
||||
void clearRollingUpgradeMarker(String bpid) throws IOException;
|
||||
|
||||
/**
|
||||
* submit a sync_file_range request to AsyncDiskService
|
||||
* submit a sync_file_range request to AsyncDiskService.
|
||||
*/
|
||||
public void submitBackgroundSyncFileRangeRequest(final ExtendedBlock block,
|
||||
void submitBackgroundSyncFileRangeRequest(final ExtendedBlock block,
|
||||
final FileDescriptor fd, final long offset, final long nbytes,
|
||||
final int flags);
|
||||
|
||||
/**
|
||||
* Callback from RamDiskAsyncLazyPersistService upon async lazy persist task end
|
||||
*/
|
||||
public void onCompleteLazyPersist(String bpId, long blockId,
|
||||
void onCompleteLazyPersist(String bpId, long blockId,
|
||||
long creationTime, File[] savedFiles, V targetVolume);
|
||||
|
||||
/**
|
||||
* Callback from RamDiskAsyncLazyPersistService upon async lazy persist task fail
|
||||
*/
|
||||
public void onFailLazyPersist(String bpId, long blockId);
|
||||
void onFailLazyPersist(String bpId, long blockId);
|
||||
|
||||
/**
|
||||
* Move block from one storage to another storage
|
||||
*/
|
||||
public ReplicaInfo moveBlockAcrossStorage(final ExtendedBlock block,
|
||||
ReplicaInfo moveBlockAcrossStorage(final ExtendedBlock block,
|
||||
StorageType targetStorageType) throws IOException;
|
||||
|
||||
/**
|
||||
|
|
@ -629,15 +630,15 @@ public interface FsDatasetSpi<V extends FsVolumeSpi> extends FSDatasetMBean {
|
|||
*
|
||||
* It is a no-op when dfs.datanode.block-pinning.enabled is set to false.
|
||||
*/
|
||||
public void setPinning(ExtendedBlock block) throws IOException;
|
||||
void setPinning(ExtendedBlock block) throws IOException;
|
||||
|
||||
/**
|
||||
* Check whether the block was pinned
|
||||
*/
|
||||
public boolean getPinning(ExtendedBlock block) throws IOException;
|
||||
boolean getPinning(ExtendedBlock block) throws IOException;
|
||||
|
||||
/**
|
||||
* Confirm whether the block is deleting
|
||||
*/
|
||||
public boolean isDeletingBlock(String bpid, long blockId);
|
||||
boolean isDeletingBlock(String bpid, long blockId);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -39,38 +39,38 @@ public interface FsVolumeSpi {
|
|||
FsVolumeReference obtainReference() throws ClosedChannelException;
|
||||
|
||||
/** @return the StorageUuid of the volume */
|
||||
public String getStorageID();
|
||||
String getStorageID();
|
||||
|
||||
/** @return a list of block pools. */
|
||||
public String[] getBlockPoolList();
|
||||
String[] getBlockPoolList();
|
||||
|
||||
/** @return the available storage space in bytes. */
|
||||
public long getAvailable() throws IOException;
|
||||
long getAvailable() throws IOException;
|
||||
|
||||
/** @return the base path to the volume */
|
||||
public String getBasePath();
|
||||
String getBasePath();
|
||||
|
||||
/** @return the path to the volume */
|
||||
public String getPath(String bpid) throws IOException;
|
||||
String getPath(String bpid) throws IOException;
|
||||
|
||||
/** @return the directory for the finalized blocks in the block pool. */
|
||||
public File getFinalizedDir(String bpid) throws IOException;
|
||||
File getFinalizedDir(String bpid) throws IOException;
|
||||
|
||||
public StorageType getStorageType();
|
||||
StorageType getStorageType();
|
||||
|
||||
/** Returns true if the volume is NOT backed by persistent storage. */
|
||||
boolean isTransientStorage();
|
||||
|
||||
/**
|
||||
* Reserve disk space for an RBW block so a writer does not run out of
|
||||
* space before the block is full.
|
||||
*/
|
||||
public void reserveSpaceForRbw(long bytesToReserve);
|
||||
void reserveSpaceForRbw(long bytesToReserve);
|
||||
|
||||
/**
|
||||
* Release disk space previously reserved for RBW block.
|
||||
*/
|
||||
public void releaseReservedSpace(long bytesToRelease);
|
||||
|
||||
/** Returns true if the volume is NOT backed by persistent storage. */
|
||||
public boolean isTransientStorage();
|
||||
void releaseReservedSpace(long bytesToRelease);
|
||||
|
||||
/**
|
||||
* Release reserved memory for an RBW block written to transient storage
|
||||
|
|
@ -78,7 +78,7 @@ public interface FsVolumeSpi {
|
|||
* bytesToRelease will be rounded down to the OS page size since locked
|
||||
* memory reservation must always be a multiple of the page size.
|
||||
*/
|
||||
public void releaseLockedMemory(long bytesToRelease);
|
||||
void releaseLockedMemory(long bytesToRelease);
|
||||
|
||||
/**
|
||||
* BlockIterator will return ExtendedBlock entries from a block pool in
|
||||
|
|
@ -90,7 +90,7 @@ public interface FsVolumeSpi {
|
|||
*
|
||||
* Closing the iterator does not save it. You must call save to save it.
|
||||
*/
|
||||
public interface BlockIterator extends Closeable {
|
||||
interface BlockIterator extends Closeable {
|
||||
/**
|
||||
* Get the next block.<p/>
|
||||
*
|
||||
|
|
@ -107,17 +107,17 @@ public interface FsVolumeSpi {
|
|||
* this volume. In this case, EOF will be set on
|
||||
* the iterator.
|
||||
*/
|
||||
public ExtendedBlock nextBlock() throws IOException;
|
||||
ExtendedBlock nextBlock() throws IOException;
|
||||
|
||||
/**
|
||||
* Returns true if we got to the end of the block pool.
|
||||
*/
|
||||
public boolean atEnd();
|
||||
boolean atEnd();
|
||||
|
||||
/**
|
||||
* Repositions the iterator at the beginning of the block pool.
|
||||
*/
|
||||
public void rewind();
|
||||
void rewind();
|
||||
|
||||
/**
|
||||
* Save this block iterator to the underlying volume.
|
||||
|
|
@ -127,7 +127,7 @@ public interface FsVolumeSpi {
|
|||
* @throws IOException If there was an error when saving the block
|
||||
* iterator.
|
||||
*/
|
||||
public void save() throws IOException;
|
||||
void save() throws IOException;
|
||||
|
||||
/**
|
||||
* Set the maximum staleness of entries that we will return.<p/>
|
||||
|
|
@ -138,25 +138,25 @@ public interface FsVolumeSpi {
|
|||
* to 0, consumers of this API must handle race conditions where block
|
||||
* disappear before they can be processed.
|
||||
*/
|
||||
public void setMaxStalenessMs(long maxStalenessMs);
|
||||
void setMaxStalenessMs(long maxStalenessMs);
|
||||
|
||||
/**
|
||||
* Get the wall-clock time, measured in milliseconds since the Epoch,
|
||||
* when this iterator was created.
|
||||
*/
|
||||
public long getIterStartMs();
|
||||
long getIterStartMs();
|
||||
|
||||
/**
|
||||
* Get the wall-clock time, measured in milliseconds since the Epoch,
|
||||
* when this iterator was last saved. Returns iterStartMs if the
|
||||
* iterator was never saved.
|
||||
*/
|
||||
public long getLastSavedMs();
|
||||
long getLastSavedMs();
|
||||
|
||||
/**
|
||||
* Get the id of the block pool which this iterator traverses.
|
||||
*/
|
||||
public String getBlockPoolId();
|
||||
String getBlockPoolId();
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -168,7 +168,7 @@ public interface FsVolumeSpi {
|
|||
*
|
||||
* @return The new block iterator.
|
||||
*/
|
||||
public BlockIterator newBlockIterator(String bpid, String name);
|
||||
BlockIterator newBlockIterator(String bpid, String name);
|
||||
|
||||
/**
|
||||
* Load a saved block iterator.
|
||||
|
|
@ -180,11 +180,10 @@ public interface FsVolumeSpi {
|
|||
* @throws IOException If there was an IO error loading the saved
|
||||
* block iterator.
|
||||
*/
|
||||
public BlockIterator loadBlockIterator(String bpid, String name)
|
||||
throws IOException;
|
||||
BlockIterator loadBlockIterator(String bpid, String name) throws IOException;
|
||||
|
||||
/**
|
||||
* Get the FSDatasetSpi which this volume is a part of.
|
||||
*/
|
||||
public FsDatasetSpi getDataset();
|
||||
FsDatasetSpi getDataset();
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue