1MB quota limit for a blobstore object in Google App Engine?

Question

I\'m using App Engine (version 1.4.3) direct write the blobstore in order to save images. when I try to store an image which is larger than 1MB I get the following Exceptio

Answer 1

Here is how I read and write large files:

public byte[] readImageData(BlobKey blobKey, long blobSize) {
    BlobstoreService blobStoreService = BlobstoreServiceFactory
            .getBlobstoreService();
    byte[] allTheBytes = new byte[0];
    long amountLeftToRead = blobSize;
    long startIndex = 0;
    while (amountLeftToRead > 0) {
        long amountToReadNow = Math.min(
                BlobstoreService.MAX_BLOB_FETCH_SIZE - 1, amountLeftToRead);

        byte[] chunkOfBytes = blobStoreService.fetchData(blobKey,
                startIndex, startIndex + amountToReadNow - 1);

        allTheBytes = ArrayUtils.addAll(allTheBytes, chunkOfBytes);

        amountLeftToRead -= amountToReadNow;
        startIndex += amountToReadNow;
    }

    return allTheBytes;
}

public BlobKey writeImageData(byte[] bytes) throws IOException {
    FileService fileService = FileServiceFactory.getFileService();

    AppEngineFile file = fileService.createNewBlobFile("image/jpeg");
    boolean lock = true;
    FileWriteChannel writeChannel = fileService
            .openWriteChannel(file, lock);

    writeChannel.write(ByteBuffer.wrap(bytes));
    writeChannel.closeFinally();

    return fileService.getBlobKey(file);
}