Zsolt Venczel created HDFS-13744:
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Summary: OIV tool should better handle control characters present
in file or directory names
Key: HDFS-13744
URL: https://issues.apache.org/jira/browse/HDFS-13744
Project: Hadoop HDFS
Issue Type: Improvement
Components: hdfs, tools
Affects Versions: 3.0.3, 2.7.6, 2.8.4, 2.9.1, 2.6.5
Reporter: Zsolt Venczel
Assignee: Zsolt Venczel
In certain cases when control characters or white space is present in file or
directory names OIV tool processors can export data in a misleading format.
In the below examples we have EXAMPLE_NAME as a file and a directory name where
the directory has a line feed character at the end (the actual production case
has multiple line feeds and multiple spaces)
* CSV processor case:
** misleading example:
{code:java}
/user/data/EXAMPLE_NAME
,0,2017-04-24 04:34,1969-12-31 16:00,0,0,0,-1,-1,drwxrwxr-x+,user,group
/user/data/EXAMPLE_NAME,2016-08-26 03:00,2017-05-16
10:05,134217728,1,520,0,0,-rw-rwxr--+,user,group
{code}
** expected example as suggested by
[https://tools.ietf.org/html/rfc4180#section-2:]
{code:java}
"/user/data/EXAMPLE_NAME%x0D",0,2017-04-24 04:34,1969-12-31
16:00,0,0,0,-1,-1,drwxrwxr-x+,user,group
"/user/data/EXAMPLE_NAME",2016-08-26 03:00,2017-05-16
10:05,134217728,1,520,0,0,-rw-rwxr--+,user,group
{code}
* XML processor case:
** misleading example:
{code:java}
<inode><id>479867791</id><type>DIRECTORY</type><name>EXAMPLE_NAME
</name><mtime>1493033668294</mtime><permission>user:group:0775</permission></inode>
<inode><id>113632535</id><type>FILE</type><name>EXAMPLE_NAME</name><replication>3</replication><mtime>1472205657504</mtime><atime>1494954320141</atime><preferredBlockSize>134217728</preferredBlockSize><permission>user:group:0674</permission></inode>
{code}
** expected example as specified in
[https://www.w3.org/TR/REC-xml/#sec-line-ends:]
{code:java}
<inode><id>479867791</id><type>DIRECTORY</type><name>EXAMPLE_NAME#xA</name><mtime>1493033668294</mtime><permission>user:group:0775</permission></inode>
<inode><id>479867791</id><type>DIRECTORY</type><name>EXAMPLE_NAME
</name><mtime>1493033668294</mtime><permission>user:group:0775</permission></inode>
{code}
* JSON:
The OIV Web Processor behaves correctly and produces the following:
{code:java}
{
"FileStatuses": {
"FileStatus": [
{
"fileId": 113632535,
"accessTime": 1494954320141,
"replication": 3,
"owner": "user",
"length": 520,
"permission": "674",
"blockSize": 134217728,
"modificationTime": 1472205657504,
"type": "FILE",
"group": "group",
"childrenNum": 0,
"pathSuffix": "EXAMPLE_NAME"
},
{
"fileId": 479867791,
"accessTime": 0,
"replication": 0,
"owner": "user",
"length": 0,
"permission": "775",
"blockSize": 0,
"modificationTime": 1493033668294,
"type": "DIRECTORY",
"group": "group",
"childrenNum": 0,
"pathSuffix": "EXAMPLE_NAME\n"
}
]
}
}
{code}
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