ArrayIndexOutOfBoundsException while downloading the file

Hi,

We recently faced "java.lang.ArrayIndexOutOfBoundsException" Exception while downloading the file from SFTP server. This happens intermittently. Few observations:

- Mainly it happens when the Thread which downloads the file is running from a long time (~10 minutes)
- The thread has to download ~100 files one by one.
- Once we see this error, it keeps on happening for few minutes but it happens for all the files downloaded with the thread.
- It becomes normal after sometime and we are able to download files after that.

Did someone also faced the similar error? What could cause this ? What are the workaround for this ?