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handle non continuous writes

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fix #728
This commit is contained in:
Chris Lu 2018-09-10 02:39:41 -07:00
parent 109385e955
commit 267201ff44
1 changed files with 10 additions and 2 deletions
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12
weed/filesys/dirty_page.go
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@ -66,10 +66,18 @@ func (pages *ContinuousDirtyPages) AddPage(ctx context.Context, offset int64, da
if offset != pages.Offset+pages.Size {
// when this happens, debug shows the data overlapping with existing data is empty
// the data is not just append
return pages.flushAndSave(ctx, offset, data)
if offset == pages.Offset {
copy(pages.Data[pages.Size:], data[pages.Size:])
} else {
if pages.Size != 0 {
glog.V(0).Infof("possible error: pages [%d, %d) write [%d, %d)", pages.Offset, pages.Offset+pages.Size, offset, offset+int64(len(data)))
}
return pages.flushAndSave(ctx, offset, data)
}
} else {
copy(pages.Data[offset-pages.Offset:], data)
}
copy(pages.Data[offset-pages.Offset:], data)
pages.Size = max(pages.Size, offset+int64(len(data))-pages.Offset)
return