mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-15 19:26:42 +08:00
d4566d4aaa
* compare chunks by timestamp
* fix slab clearing error
* fix test compilation
* move oldest chunk to sealed, instead of by fullness
* lock on fh.entryViewCache
* remove verbose logs
* revert slat clearing
* less logs
* less logs
* track write and read by timestamp
* remove useless logic
* add entry lock on file handle release
* use mem chunk only, swap file chunk has problems
* comment out code that maybe used later
* add debug mode to compare data read and write
* more efficient readResolvedChunks with linked list
* small optimization
* fix test compilation
* minor fix on writer
* add SeparateGarbageChunks
* group chunks into sections
* turn off debug mode
* fix tests
* fix tests
* tmp enable swap file chunk
* Revert "tmp enable swap file chunk"
This reverts commit 985137ec47.
* simple refactoring
* simple refactoring
* do not re-use swap file chunk. Sealed chunks should not be re-used.
* comment out debugging facilities
* either mem chunk or swap file chunk is fine now
* remove orderedMutex as *semaphore.Weighted
not found impactful
* optimize size calculation for changing large files
* optimize performance to avoid going through the long list of chunks
* still problems with swap file chunk
* rename
* tiny optimization
* swap file chunk save only successfully read data
* fix
* enable both mem and swap file chunk
* resolve chunks with range
* rename
* fix chunk interval list
* also change file handle chunk group when adding chunks
* pick in-active chunk with time-decayed counter
* fix compilation
* avoid nil with empty fh.entry
* refactoring
* rename
* rename
* refactor visible intervals to *list.List
* refactor chunkViews to *list.List
* add IntervalList for generic interval list
* change visible interval to use IntervalList in generics
* cahnge chunkViews to *IntervalList[*ChunkView]
* use NewFileChunkSection to create
* rename variables
* refactor
* fix renaming leftover
* renaming
* renaming
* add insert interval
* interval list adds lock
* incrementally add chunks to readers
Fixes:
1. set start and stop offset for the value object
2. clone the value object
3. use pointer instead of copy-by-value when passing to interval.Value
4. use insert interval since adding chunk could be out of order
* fix tests compilation
* fix tests compilation
100 lines
2.7 KiB
Go
100 lines
2.7 KiB
Go
package mount
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import (
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"context"
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"fmt"
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"io"
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"github.com/seaweedfs/seaweedfs/weed/filer"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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)
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func (fh *FileHandle) lockForRead(startOffset int64, size int) {
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fh.dirtyPages.LockForRead(startOffset, startOffset+int64(size))
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}
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func (fh *FileHandle) unlockForRead(startOffset int64, size int) {
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fh.dirtyPages.UnlockForRead(startOffset, startOffset+int64(size))
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}
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func (fh *FileHandle) readFromDirtyPages(buff []byte, startOffset int64, tsNs int64) (maxStop int64) {
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maxStop = fh.dirtyPages.ReadDirtyDataAt(buff, startOffset, tsNs)
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return
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}
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func (fh *FileHandle) readFromChunks(buff []byte, offset int64) (int64, int64, error) {
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fh.entryLock.Lock()
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defer fh.entryLock.Unlock()
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fileFullPath := fh.FullPath()
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entry := fh.GetEntry()
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if entry == nil {
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return 0, 0, io.EOF
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}
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if entry.IsInRemoteOnly() {
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glog.V(4).Infof("download remote entry %s", fileFullPath)
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newEntry, err := fh.downloadRemoteEntry(entry)
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if err != nil {
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glog.V(1).Infof("download remote entry %s: %v", fileFullPath, err)
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return 0, 0, err
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}
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entry = newEntry
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}
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fileSize := int64(entry.Attributes.FileSize)
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if fileSize == 0 {
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fileSize = int64(filer.FileSize(entry))
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}
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if fileSize == 0 {
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glog.V(1).Infof("empty fh %v", fileFullPath)
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return 0, 0, io.EOF
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}
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if offset+int64(len(buff)) <= int64(len(entry.Content)) {
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totalRead := copy(buff, entry.Content[offset:])
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glog.V(4).Infof("file handle read cached %s [%d,%d] %d", fileFullPath, offset, offset+int64(totalRead), totalRead)
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return int64(totalRead), 0, nil
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}
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totalRead, ts, err := fh.entryChunkGroup.ReadDataAt(fileSize, buff, offset)
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if err != nil && err != io.EOF {
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glog.Errorf("file handle read %s: %v", fileFullPath, err)
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}
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// glog.V(4).Infof("file handle read %s [%d,%d] %d : %v", fileFullPath, offset, offset+int64(totalRead), totalRead, err)
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return int64(totalRead), ts, err
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}
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func (fh *FileHandle) downloadRemoteEntry(entry *filer_pb.Entry) (*filer_pb.Entry, error) {
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fileFullPath := fh.FullPath()
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dir, _ := fileFullPath.DirAndName()
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err := fh.wfs.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.CacheRemoteObjectToLocalClusterRequest{
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Directory: string(dir),
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Name: entry.Name,
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}
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glog.V(4).Infof("download entry: %v", request)
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resp, err := client.CacheRemoteObjectToLocalCluster(context.Background(), request)
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if err != nil {
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return fmt.Errorf("CacheRemoteObjectToLocalCluster file %s: %v", fileFullPath, err)
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}
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entry = resp.Entry
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fh.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, resp.Entry))
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return nil
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})
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return entry, err
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}
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