[jira] [Updated] (NIFI-4160) SFTPTransfer should specify connection timeout

["Koji Kawamura (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-4160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Koji Kawamura updated NIFI-4160:
--------------------------------
    Status: Patch Available  (was: Open)

> SFTPTransfer should specify connection timeout
> ----------------------------------------------
>
>                 Key: NIFI-4160
>                 URL: https://issues.apache.org/jira/browse/NIFI-4160
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Extensions
>    Affects Versions: 1.0.0
>            Reporter: Koji Kawamura
>            Assignee: Koji Kawamura
>
> For FTP/SFTP, we use com.jcraft.jsch library. When XXXSFTP processor make use of the library, there are two occasions to set connection timeout. One is connecting a session (Socket), and the other is opening a SFTP channel.
> Currently we set a connection timeout which can be specified via processor property for connecting a session, but not for opening an SFTP channel.
> Then the library uses default 10ms x 2000 retry to open the channel. With slow SFTP servers it's possible that opening channel takes longer than 10ms, which can cause following error:
> {code}
> java.io.IOException: Failed to obtain connection to remote host due to com.jcraft.jsch.JSchException: channel is not opened
> {code}
> We should specify connection timeout for opening channel as well.



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