[
https://issues.apache.org/jira/browse/HADOOP-11774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15225933#comment-15225933
]
Sean Cho commented on HADOOP-11774:
-----------------------------------
Hi, after investigation and tests, we figured out that some configurations in
FTPFIleSystem class in hadoop common project were hard-coded.
The code is as follows.
client.setFileTransferMode(FTP.BLOCK_TRANSFER_MODE);
client.setFileType(FTP.BINARY_FILE_TYPE);
client.setBufferSize(DEFAULT_BUFFER_SIZE);
According to RFP documentation(https://tools.ietf.org/html/rfc959), there are
three transfer mode for FTP generally.(Stream, Block, Compressed) However, IIS
FTP server does not support BLOCK_TRANSFER_MODE apparently, and it gives a
connection reset error when you run a command after another.
I think it is more reasonable to allow user to configure these. I can commit
the change to this if no one else has already worked on this.
Any comments?
> listStatus in FTPFileSystem fails with connection reset
> -------------------------------------------------------
>
> Key: HADOOP-11774
> URL: https://issues.apache.org/jira/browse/HADOOP-11774
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 2.3.0
> Environment: Remote FTP located in Windows NT FTP
> Reporter: Krishnamoorthy Dharmalingam
>
> Following exception trace raised when FTPFileSystem.listStatus() called in
> Passive/active mode.
> Caused by: java.net.SocketException: Connection reset
> at java.net.SocketInputStream.read(SocketInputStream.java:196)
> at java.net.SocketInputStream.read(SocketInputStream.java:122)
> at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:283)
> at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:325)
> at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:177)
> at java.io.InputStreamReader.read(InputStreamReader.java:184)
> at java.io.BufferedReader.fill(BufferedReader.java:154)
> at java.io.BufferedReader.read(BufferedReader.java:175)
> at
> org.apache.commons.net.io.CRLFLineReader.readLine(CRLFLineReader.java:58)
> at org.apache.commons.net.ftp.FTP.__getReply(FTP.java:310)
> at org.apache.commons.net.ftp.FTP.__getReply(FTP.java:290)
> at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:479)
> at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:552)
> at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:601)
> at org.apache.commons.net.ftp.FTP.quit(FTP.java:809)
> at org.apache.commons.net.ftp.FTPClient.logout(FTPClient.java:979)
> at
> org.apache.hadoop.fs.ftp.FTPFileSystem.disconnect(FTPFileSystem.java:151)
> at
> org.apache.hadoop.fs.ftp.FTPFileSystem.getFileStatus(FTPFileSystem.java:395)
> at org.apache.hadoop.fs.FileSystem.isFile(FileSystem.java:1424)
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
