@Override public void close(IPageWriteFailureCallback callback) throws HyracksDataException { if (ready) { ICachedPage metaNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, getMetadataPageId()), false); ITreeIndexMetadataFrame metaFrame = frameFactory.createFrame(); metaNode.acquireWriteLatch(); try { metaFrame.setPage(metaNode); metaFrame.setValid(true); } finally { metaNode.releaseWriteLatch(true); bufferCache.flush(metaNode); bufferCache.unpin(metaNode); ready = true; } ready = false; } }
@Override public void close(IPageWriteFailureCallback callback) throws HyracksDataException { if (ready) { IFIFOPageQueue queue = bufferCache.createFIFOQueue(); ITreeIndexMetadataFrame metaFrame = frameFactory.createFrame(); confiscatedPage.acquireWriteLatch(); try { metaFrame.setPage(confiscatedPage); metaFrame.setValid(true); } finally { confiscatedPage.releaseWriteLatch(false); } int finalMetaPage = getMaxPageId(metaFrame) + 1; confiscatedPage.setDiskPageId(BufferedFileHandle.getDiskPageId(fileId, finalMetaPage)); final ICompressedPageWriter compressedPageWriter = bufferCache.getCompressedPageWriter(fileId); compressedPageWriter.prepareWrite(confiscatedPage); // WARNING: flushing the metadata page should be done after releasing the write latch; otherwise, the page // won't be flushed to disk because it won't be dirty until the write latch has been released. queue.put(confiscatedPage, callback); bufferCache.finishQueue(); compressedPageWriter.endWriting(); metadataPage = getMetadataPageId(); ready = false; } else if (confiscatedPage != null) { bufferCache.returnPage(confiscatedPage, false); } confiscatedPage = null; }