我正在从 Blob 中读取 PDF 文件并使用 Azure Function 进行一些操作。当 PDF 大小为 1.5GB(或更大)时,我的 Azure Function 在代码命中以下命令后立即因内存不足而失败。
var ms = new MemoryStream();
log.LogInformation("Converting this File to memorystream : " + blob.Uri);
blob.DownloadToStream(ms); //Failes HERE.
我尝试将计划切换到EP3(14 GB内存+840 ACU),但问题仍然相同。我需要更改其他配置吗?如何处理这个问题。
Microsoft.Azure.Storage.StorageException: Exception of type 'System.OutOfMemoryException' was thrown.
---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at System.IO.MemoryStream.set_Capacity(Int32 value)
at System.IO.MemoryStream.EnsureCapacity(Int32 value)
at System.IO.MemoryStream.Write(Byte[] buffer, Int32 offset, Int32 count)
at System.IO.MemoryStream.WriteAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken)
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.Azure.Storage.Core.Util.AsyncStreamCopier`1.StartCopyStreamAsyncHelper(Nullable`1 copyLength, Nullable`1 maxLength, CancellationToken token)
at Microsoft.Azure.Storage.Core.Util.AsyncStreamCopier`1.StartCopyStreamAsync(Nullable`1 copyLength, Nullable`1 maxLength, CancellationToken cancellationToken)
at Microsoft.Azure.Storage.Core.Executor.Executor.ExecuteAsync[T](RESTCommand`1 cmd, IRetryPolicy policy, OperationContext operationContext, CancellationToken token)
--- End of inner exception stack trace ---
at Microsoft.Azure.Storage.Core.Executor.Executor.ExecuteAsync[T](RESTCommand`1 cmd, IRetryPolicy policy, OperationContext operationContext, CancellationToken token)
at Microsoft.Azure.Storage.Core.Executor.Executor.<>c__DisplayClass0_0`1.<ExecuteSync>b__0()
at Microsoft.Azure.Storage.Core.Util.CommonUtility.RunWithoutSynchronizationContext[T](Func`1 actionToRun)
at Microsoft.Azure.Storage.Core.Executor.Executor.ExecuteSync[T](RESTCommand`1 cmd, IRetryPolicy policy, OperationContext operationContext)
at Microsoft.Azure.Storage.Blob.CloudBlob.DownloadRangeToStream(Stream target, Nullable`1 offset, Nullable`1 length, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext)
at Microsoft.Azure.Storage.Blob.CloudBlob.DownloadToStream(Stream target, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext)
CloudBlob.OpenRead
返回的流。 - Tom W