[HADOOP-11515] Upgrade jsch lib to jsch-0.1.51 to avoid problems running on java7

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: build
• Labels: BB2015-05-TBR
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Tsuyoshi Ozawa
• Reporter: Johannes Zillmann
• Created: 07/Nov/14 09:02
• Updated: 21/Feb/17 14:21
• Resolved: 13/Oct/15 20:33

Description

We had an application sitting on top of Hadoop and got problems using jsch once we switched to java 7. Got this exception:

 com.jcraft.jsch.JSchException: verify: false
	at com.jcraft.jsch.Session.connect(Session.java:330)
	at com.jcraft.jsch.Session.connect(Session.java:183)

Upgrading to jsch-0.1.51 from jsch-0.1.49 fixed the issue for us, but then it got in conflict with hadoop's jsch version (we fixed this for us by jarjar'ing our jsch version).

So i think jsch got introduce by namenode HA (HDFS-1623). So you guys should check if the ssh part is properly working for java7 or preventively upgrade the jsch lib to jsch-0.1.51!

Some references to problems reported:

• http://sourceforge.net/p/jsch/mailman/jsch-users/thread/[e-mail]/
• https://issues.apache.org/bugzilla/show_bug.cgi?id=53437

Issue Links

• is depended upon by: HADOOP-9991 Fix up Hadoop POMs, roll up JARs to latest versions
• is related to: HADOOP-14100 Upgrade Jsch jar to latest version to fix vulnerability in old versions