{"action":"created","comment":{"url":"https://api.github.com/repos/caskdata/cdap/pulls/comments/45828051","id":45828051,"diff_hunk":"@@ -241,6 +232,89 @@ production would have a load balancer in front, which is what you would set\n to a particular router, and if you have both UI and router running on each node, you could\n use ``'127.0.0.1'``.\n \n+CDAP services on distributed CDAP aren't starting up due to ``java.lang.ClassNotFoundException``. What should I do?\n+-------------------------------------------------------------------------------------------------------------------\n+If the CDAP services on a distributed CDAP environment wouldn't start up, you will see errors\n+in the logs. You will find in the logs for ``cdap-master`` under ``/var/log/cdap/master*.log``\n+errors such as these::\n+\n+ \"Exception in thread \"main\" java.lang.NoClassDefFoundError:\n+   co.cask.cdap.data.runtime.main.MasterServiceMain\n+     at gnu.java.lang.MainThread.run(libgcj.so.10)\"\n+\n+Things to check as possible solutions:\n+\n+1. Check if the JDK being used is :ref:`supported by CDAP <hadoop-install-java-runtime>`::\n+\n+    java -version\n+\n+#. Check if the CDAP user is using a :ref:`correct version of the JDK <hadoop-install-java-runtime>`::\n+\n+    sudo su - <cdap-user> \n+    java -version\n+   \n+#. Run this command to see if all the CDAP classpaths are included::\n+\n+    /opt/cdap/master/bin/svc-master classpath | tr ':' '\\n'\n+   \n+   Expect to see (where *<version>* is one of ``0.94``, ``0.96``, or ``0.98``)::","path":"cdap-docs/faqs/source/cdap.rst","position":135,"original_position":135,"commit_id":"88d3e5be82a2c48df9f4d0631ce479f1f0dc2faf","original_commit_id":"88d3e5be82a2c48df9f4d0631ce479f1f0dc2faf","user":{"login":"dereklwood","id":1816517,"avatar_url":"https://avatars.githubusercontent.com/u/1816517?v=3","gravatar_id":"","url":"https://api.github.com/users/dereklwood","html_url":"https://github.com/dereklwood","followers_url":"https://api.github.com/users/dereklwood/followers","following_url":"https://api.github.com/users/dereklwood/following{/other_user}","gists_url":"https://api.github.com/users/dereklwood/gists{/gist_id}","starred_url":"https://api.github.com/users/dereklwood/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dereklwood/subscriptions","organizations_url":"https://api.github.com/users/dereklwood/orgs","repos_url":"https://api.github.com/users/dereklwood/repos","events_url":"https://api.github.com/users/dereklwood/events{/privacy}","received_events_url":"https://api.github.com/users/dereklwood/received_events","type":"User","site_admin":false},"body":"hbase-compat versions outdated (do we really need to list them?).  currently they are 0.96, 0.98, 1.0, 1.0-cdh, and 1.1","created_at":"2015-11-25T04:13:08Z","updated_at":"2015-11-25T04:13:08Z","html_url":"https://github.com/caskdata/cdap/pull/4581#discussion_r45828051","pull_request_url":"https://api.github.com/repos/caskdata/cdap/pulls/4581","_links":{"self":{"href":"https://api.github.com/repos/caskdata/cdap/pulls/comments/45828051"},"html":{"href":"https://github.com/caskdata/cdap/pull/4581#discussion_r45828051"},"pull_request":{"href":"https://api.github.com/repos/caskdata/cdap/pulls/4581"}}},"pull_request":{"url":"https://api.github.com/repos/caskdata/cdap/pulls/4581","id":51178690,"html_url":"https://github.com/caskdata/cdap/pull/4581","diff_url":"https://github.com/caskdata/cdap/pull/4581.diff","patch_url":"https://github.com/caskdata/cdap/pull/4581.patch","issue_url":"https://api.github.com/repos/caskdata/cdap/issues/4581","number":4581,"state":"open","locked":false,"title":"CDAP-4093, 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