David S. Wang created HADOOP-10714:
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             Summary: AmazonS3Client.deleteObjects() need to be limited to 1000 
entries per call
                 Key: HADOOP-10714
                 URL: https://issues.apache.org/jira/browse/HADOOP-10714
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs/s3
    Affects Versions: 2.4.0
            Reporter: David S. Wang
            Assignee: David S. Wang
            Priority: Critical


In the patch for HADOOP-10400, calls to AmazonS3Client.deleteObjects() need to 
have the number of entries at 1000 or below. Otherwise we get a Malformed XML 
error similar to:

com.amazonaws.services.s3.model.AmazonS3Exception: Status Code: 400, AWS 
Service: Amazon S3, AWS Request ID: 6626AD56A3C76F5B, AWS Error Code: 
MalformedXML, AWS Error Message: The XML you provided was not well-formed or 
did not validate against our published schema, S3 Extended Request ID: 
DOt6C+Y84mGSoDuaQTCo33893VaoKGEVC3y1k2zFIQRm+AJkFH2mTyrDgnykSL+v
at 
com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:798)
at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:421)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:232)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3528)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3480)
at 
com.amazonaws.services.s3.AmazonS3Client.deleteObjects(AmazonS3Client.java:1739)
at org.apache.hadoop.fs.s3a.S3AFileSystem.rename(S3AFileSystem.java:388)
at org.apache.hadoop.hbase.snapshot.ExportSnapshot.run(ExportSnapshot.java:829)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at 
org.apache.hadoop.hbase.snapshot.ExportSnapshot.innerMain(ExportSnapshot.java:874)
at org.apache.hadoop.hbase.snapshot.ExportSnapshot.main(ExportSnapshot.java:878)

Note that this is mentioned in the AWS documentation:
http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html

"The Multi-Object Delete request contains a list of up to 1000 keys that you 
want to delete. In the XML, you provide the object key names, and optionally, 
version IDs if you want to delete a specific version of the object from a 
versioning-enabled bucket. For each key, Amazon S3….”

Thanks to Matteo Bertozzi and Rahul Bhartia from AWS for identifying the 
problem.



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