Steve Yang created HADOOP-13618:
-----------------------------------

             Summary: IllegalArgumentException when accessing Swift object with 
name containing space character
                 Key: HADOOP-13618
                 URL: https://issues.apache.org/jira/browse/HADOOP-13618
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs/swift
    Affects Versions: 2.6.0
         Environment: Linux EL6
            Reporter: Steve Yang


We are using Spark and hadoop-openstack-2.6.0.jar 
(compile('org.apache.hadoop:hadoop-openstack:2.6.0')) to access Oracle Storage 
Service which is Swift-based:

DataFrame df = 
hiveCtx.read().format("com.databricks.spark.csv").option(...).load(objectName);

When accessing a Swift URL like "swift://Linda.oracleswift/non-matching 
records.csv" where the object name "non-matching records.csv" contains a space 
character, the following exception is thrown:

2016-08-23 15:56:03 DEBUG SwiftNativeFileSystem:126 - SwiftFileSystem 
initialized
java.lang.IllegalArgumentException: Illegal character in path at index 13: 
/non-matching records.csv
at java.net.URI.create(URI.java:859)
at 
org.apache.hadoop.fs.swift.util.SwiftObjectPath.<init>(SwiftObjectPath.java:59)
at 
org.apache.hadoop.fs.swift.util.SwiftObjectPath.fromPath(SwiftObjectPath.java:183)
at 
org.apache.hadoop.fs.swift.util.SwiftObjectPath.fromPath(SwiftObjectPath.java:145)
at 
org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystemStore.toObjectPath(SwiftNativeFileSystemStore.java:434)
at 
org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystemStore.getObjectMetadata(SwiftNativeFileSystemStore.java:211)
at 
org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystemStore.getObjectMetadata(SwiftNativeFileSystemStore.java:181)
at 
org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystem.getFileStatus(SwiftNativeFileSystem.java:173)
at org.apache.hadoop.fs.Globber.getFileStatus(Globber.java:64)
at org.apache.hadoop.fs.Globber.doGlob(Globber.java:272)
at org.apache.hadoop.fs.Globber.glob(Globber.java:151)
at org.apache.hadoop.fs.FileSystem.globStatus(FileSystem.java:1653)
at 
org.apache.hadoop.mapred.FileInputFormat.singleThreadedListStatus(FileInputFormat.java:259)
...

Apparently it is complaining about the space character. However, checking the 
debug messages earlier before this error is raised we can see:

2016-08-23 15:56:03 DEBUG SwiftNativeFileSystem:122 - Initializing 
SwiftNativeFileSystem against URI 
swift://Linda.oracleswift/non-matching%20records.csv and working dir 
swift://Linda.oracleswift/user/syang
2016-08-23 15:56:03 DEBUG RestClientBindings:141 - Filesystem 
swift://Linda.oracleswift/non-matching%20records.csv is using configuration 
keys fs.swift.service.oracleswift
...

The space character has already been encoded into "%20" and so it seems the 
Swift URL enters into SwiftNativeFileSystem is properly encoded.
Because of this error any Swift object with file name contains space character 
(and may be slash '/' character as well?) cannot be accessed.

As an additional data point, if we first encode the object name("non-matching 
records.csv"=>"non-matching%20records.csv") before giving it to OpenStack Swift 
API, a different error is raised. This time somehow the path separator '/' 
after the container name 'Linda' got encoded by SwiftNativeFileSystemStore:

2016-08-23 10:56:41 DEBUG SwiftRestClient:1731 - Status code = 400
2016-08-23 10:56:41 DEBUG SwiftRestClient:1445 - Method HEAD on 
https://storage.oraclecorp.com/v1/Storage-dfisher/Linda%2Fnon-matching%20records.csv
 failed, status code: 400, status line: HTTP/1.1 400 Bad Request
BadRequest: Bad request against 
https://storage.oraclecorp.com/v1/Storage-dfisher/Linda%2Fnon-matching%20records.csv
 HEAD 
https://storage.oraclecorp.com/v1/Storage-dfisher/Linda%2Fnon-matching%20records.csv
 => 400
at 
org.apache.hadoop.fs.swift.http.SwiftRestClient.buildException(SwiftRestClient.java:1456)
at 
org.apache.hadoop.fs.swift.http.SwiftRestClient.perform(SwiftRestClient.java:1403)
at 
org.apache.hadoop.fs.swift.http.SwiftRestClient.headRequest(SwiftRestClient.java:1016)
at 
org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystemStore.stat(SwiftNativeFileSystemStore.java:257)
at 
org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystemStore.getObjectMetadata(SwiftNativeFileSystemStore.java:212)
at 
org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystemStore.getObjectMetadata(SwiftNativeFileSystemStore.java:181)
at 
org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystem.getFileStatus(SwiftNativeFileSystem.java:173)

So here it always error out whether the Swift object name is URL-encoded or not.



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