【发布时间】：2015-03-27 12:40:15
【问题描述】：
AWS Java 开发工具包 1.9.3
在 Java 服务器应用程序中从 AWS S3 下载许多大文件 (~3Gb) 时，我不时收到 SocketTimeoutException，如下所示：
Caused by: com.amazonaws.AmazonClientException: Unable to store object contents to disk: Read timed out
at com.amazonaws.services.s3.internal.ServiceUtils.downloadObjectToFile(ServiceUtils.java:270)
at com.amazonaws.services.s3.internal.ServiceUtils.retryableDownloadS3ObjectToFile(ServiceUtils.java:344)
at com.amazonaws.services.s3.transfer.TransferManager$2.call(TransferManager.java:737)
... 4 more
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:152)
at java.net.SocketInputStream.read(SocketInputStream.java:122)
at sun.security.ssl.InputRecord.readFully(InputRecord.java:442)
at sun.security.ssl.InputRecord.readV3Record(InputRecord.java:554)
at sun.security.ssl.InputRecord.read(InputRecord.java:509)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:927)
at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:884)
at sun.security.ssl.AppInputStream.read(AppInputStream.java:102)
at org.apache.http.impl.io.AbstractSessionInputBuffer.read(AbstractSessionInputBuffer.java:198)
at org.apache.http.impl.io.ContentLengthInputStream.read(ContentLengthInputStream.java:178)
at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:137)
at com.amazonaws.internal.SdkFilterInputStream.read(SdkFilterInputStream.java:73)
at com.amazonaws.event.ProgressInputStream.read(ProgressInputStream.java:151)
at com.amazonaws.internal.SdkFilterInputStream.read(SdkFilterInputStream.java:73)
at com.amazonaws.internal.SdkFilterInputStream.read(SdkFilterInputStream.java:73)
at com.amazonaws.internal.SdkFilterInputStream.read(SdkFilterInputStream.java:73)
at com.amazonaws.event.ProgressInputStream.read(ProgressInputStream.java:151)
at java.security.DigestInputStream.read(DigestInputStream.java:161)
at com.amazonaws.services.s3.internal.DigestValidationInputStream.read(DigestValidationInputStream.java:59)
at com.amazonaws.internal.SdkFilterInputStream.read(SdkFilterInputStream.java:73)
at java.io.FilterInputStream.read(FilterInputStream.java:107)
at com.amazonaws.services.s3.internal.ServiceUtils.downloadObjectToFile(ServiceUtils.java:265)
... 6 more
我使用 4 个线程从 S3 下载文件，所有线程都使用相同的 TransferManager 实例。如前所述，我使用的是 AWS SDK 1.9.3，并且只是不时地遇到此类异常。代码如下：
...
Download d = transferManager.download(currentBucket, remoteFileName, new File(tmpName));
d.waitForCompletion();
...
是SDK的问题吗？也许是 v1.9.3？
除了为ClientConfiguration 增加socketTimeout 之外，还有其他解决方案吗？
【问题讨论】：
-
我遇到了同样的问题。我正在使用 AWS S3 Android SDK 2.1.7，我的文件大约有 10MB。你有答案来解决它吗？
-
除了更改超时之外，这个问题仍然没有解决方案。
-
嗨@Yury，你能告诉我如何更改超时吗？
-
嗨@Caaarlos。以下是我可以在 AWS SDK 1.9.3 中执行的操作：
ClientConfiguration config = new ClientConfiguration(); config.setConnectionTimeout(connectionTimeout); config.setSocketTimeout(readTimeout); AmazonS3 s3 = new AmazonS3Client(credentials, config); -
感谢 Yury，您的解决方案现在有效。
标签： java amazon-s3 socket-timeout-exception