Other Notable Issues (SDK for Java)

If you have any questions during development, post them on the Issues page of GitHub.

SignatureDoesNotMatch

    
         HTTP Code: 403
Error Code: SignatureDoesNotMatch

Possible causes are as follows:

The SK input into ObsClient initialization is incorrect. Solution: Make sure that the SK is correct.
This problem is caused by a bug in the OBS Java SDK of an earlier version. Solution: Upgrade the SDK to the latest version.
OBS Java SDK 2.1.x versions are incompatible with the dependent library Apache HttpClient. Solution: Use httpcore-4.4.4 and httpclient-4.5.3.

MethodNotAllowed

    
         HTTP Code: 405
Error Code: MethodNotAllowed

This error occurs because a feature on which the ObsClient API depends has not been rolled out on the requested OBS server. Contact the OBS O&M team for further confirmation.

BucketAlreadyOwnedByYou

    
         HTTP Code: 409
Error Code: BucketAlreadyOwnedByYou

In OBS, a bucket name must be globally unique. Solution: If this error occurs when the ObsClient.createBucket is called, check whether the bucket exists. You can use either of the following methods to check whether a bucket exists:

Method 1 (recommended): Call ObsClient.listBuckets to query the list of all buckets that you own and check whether the bucket exists.

Method 2: Call ObsClient.headBucket to check whether the bucket exists.

ObsClient.headBucket can query only buckets in the current region, while ObsClient.listBuckets can query buckets in all regions.

BucketAlreadyExists

    
         HTTP Code: 409
Error Code: BucketAlreadyExists

In OBS, a bucket name must be globally unique. Solution: If this error occurs when ObsClient.createBucket is called, it indicates that the bucket has been created by another user. Use a different bucket name and try again.

Connection Timeout

    
         HTTP Code: 408
Caused by: java.net.ConnectException: Connection timed out: connect
	at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
	at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)

Possible causes are as follows:

The endpoint input during ObsClient initialization is incorrect. Solution: Make sure that the endpoint is correct.
The network between the OBS client and OBS server is abnormal. Solution: Check the health status of the network.
The OBS domain name resolved by DNS is inaccessible. Solution: Contact the OBS O&M team.

Read/Write Timeout

    
         HTTP Code: 408
Error Code:RequestTimeOut
Caused by: java.net.SocketTimeoutException: timeout
	at okio.Okio$4.newTimeoutException(Okio.java:232)
	at okio.AsyncTimeout.exit(AsyncTimeout.java:285)
	at okio.AsyncTimeout$2.read(AsyncTimeout.java:241)

Possible causes are as follows:

The network latency between the OBS client and OBS server is too long. Solution: Check the health status of the network.
The network between the OBS client and OBS server is abnormal. Solution: Check the health status of the network.

Abnormal Returned Value -1

    
         HTTP Code: -1

Possible causes are as follows:

The OBS Java SDK of an earlier version is used and a connection timeout or read/write timeout occurs. Solution: See the solutions for connection timeout and read/write timeout.
This is a bug in earlier versions of OBS Java SDK. Solution: Use the latest version of Java SDK.
The server returns an exception. Solution: Obtain the request ID returned by OBS server from the log and contact the OBS O&M team.

Unable to Obtain Error Codes from ObsException

Possible causes are as follows:

An error is reported when ObsClient.getBucketMetadata or ObsClient.getObjectMetadata is called. In this scenario, the server does not return an error code because the request method used in the background is HEAD. Solution: Call ObsException.getResponseCode to obtain the HTTP status code to analyze the possible cause. For example, 403 indicates that the user does not have the access permission, and 404 indicates that the bucket or object does not exist. If the cause cannot be located, obtain the request ID returned by the OBS server from ObsException and contact the OBS O&M team.
The endpoint passed during ObsClient initialization cannot correspond to a valid IP address of the OBS server after DNS resolution. Solution: Check whether the endpoint is correct. If the endpoint is correct, contact the OBS O&M team.

UnknownHostException

    
         Caused by: java.net.UnknownHostException: bucketname.unknowndomain.com
	at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:901)
	at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1293)

Possible causes are as follows:

The endpoint input during ObsClient initialization is incorrect. Solution: Make sure that the endpoint is correct.
DNS cannot resolve the OBS domain name. Solution: Contact the OBS O&M team.

NullPointException

    
         Exception in thread "main" java.lang.NullPointerException
	at com.obs.services.internal.RestStorageService.isCname(RestStorageService.java:1213)
	at com.obs.services.ObsClient.doActionWithResult(ObsClient.java:2805)

Possible causes are as follows:

ObsClient.close is called to close ObsClient and then another ObsClient API is called. Solution: Call ObsClient.close to release resources only before exiting the application.
This is a bug in earlier versions of OBS Java SDK. Solution: Use the latest version of Java SDK.

Connection Leakage

    
         A connection to xxx was leaked. Did you forget to close a response body?

This error occurs when ObsClient.getObject is not properly closed after it is called to obtain the data flow of the object to be downloaded. To fix this error, call the ObsObject.getObjectContent.close method in the finally statement block to close the connection.

OkHttp Error After an SDK Upgrade

    
         Exception in thread "main" java.lang.NoSuchMethodError: 'okhttp3.RequestBody okhttp3.RequestBody.create(java.lang.String, okhttp3.MediaType)'
	at com.obs.services.internal.RestConnectionService.createRequestBuilder(RestConnectionService.java:157)
	at com.obs.services.internal.RestConnectionService.setupConnection(RestConnectionService.java:148)
	at com.obs.services.internal.RestConnectionService.setupConnection(RestConnectionService.java:124)
	at com.obs.services.internal.RestStorageService.performRequest(RestStorageService.java:395)
	at com.obs.services.internal.RestStorageService.performRequest(RestStorageService.java:388)

This error occurs because OkHttp of an earlier version was used after the SDK upgrade. To resolve this issue, upgrade OkHttp to a required version by referring to Resolving Dependency Missing or Conflicts (SDK for Java).

StackOverflowError After an SDK Upgrade

    
         Caused by: java.lang.StackOverflowError
	at sun.misc.URLClassPath.getResource(URLClassPath.java:211) ~[?:1.8.0_91]
	at java.net.URLClassLoader$1.run(URLClassLoader.java:365) ~[?:1.8.0_91]
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362) ~[?:1.8.0_91]
	at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_91]
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361) ~[?:1.8.0_91]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_91]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_91]
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1806)

Check the JVM parameter xss and set it to 1 MB. xss indicates the memory size allocated to each thread started by the JVM. By default, the value of xss is 256 KB for JDK 1.4 and 1 MB for JDK 1.5 or later.

SSL peer shut down incorrectly

    
     
       
       
         javax.net.ssl.SSLException: SSL peer shut down incorrectly
	at sun.security.ssl.InputRecord.readV3Record(InputRecord.java:596)
	at sun.security.ssl.InputRecord.read(InputRecord.java:532)
	at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:975)
	at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:933)
	at sun.security.ssl.AppInputStream.read(AppInputStream.java:105)
	at obs.shaded.okio.Okio$2.read(Okio.java:140)
	at obs.shaded.okio.AsyncTimeout$2.read(AsyncTimeout.java:237)
	at obs.shaded.okio.RealBufferedSource.read(RealBufferedSource.java:51)
	at obs.shaded.okhttp3.internal.http1.Http1ExchangeCodec$AbstractSource.read(Http1ExchangeCodec.java:389)
	at obs.shaded.okhttp3.internal.http1.Http1ExchangeCodec$FixedLengthSource.read(Http1ExchangeCodec.java:427)
	at obs.shaded.okhttp3.internal.connection.Exchange$ResponseBodySource.read(Exchange.java:286)
	at obs.shaded.okio.RealBufferedSource$1.read(RealBufferedSource.java:447)
	at java.util.zip.InflaterInputStream.fill(InflaterInputStream.java:238)
	at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:158)
	at java.util.zip.GZIPInputStream.read(GZIPInputStream.java:117)
	at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
	at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
	at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
	at java.io.InputStreamReader.read(InputStreamReader.java:184)
	at java.io.BufferedReader.fill(BufferedReader.java:161)
	at java.io.BufferedReader.readLine(BufferedReader.java:324)
	at java.io.BufferedReader.readLine(BufferedReader.java:389)

        

      

    
   