philip-doctor

(ns customer-bank.core
  (:require
   [clojure.core.async :as async :refer [go timeout close! put! chan <! >!! go-loop]])
  (:gen-class))

(defrecord TransactionLog [action account-number data])

(defn add-to-bank-account [bank-balance deposit-amount]
  (let [new-balance (+ bank-balance deposit-amount)]
    (prn new-balance)

philip-doctor

-- depending on how far through the migration you progressed, parts of this may fail
-- this assumes you're using the default name of "OpsCenter" for the opscenter keyspace, otherwise 
-- you'll have to rename the "OpsCenter" part.

-- in between each step wait a few minutes, you need to wait for the migrations to propagate around the cluster
-- 5 mins should be more than enough
-- If you don't wait, CQLSH can report success but in reality, it may fail
ALTER TABLE "OpsCenter"."events" ADD message text;
ALTER TABLE "OpsCenter"."events" ADD column_family text;
ALTER TABLE "OpsCenter"."events" ADD target_node text;

philip-doctor

If opsc created these backups, there should be no problem, if the customer did something manual, then there is a problem.
This file will be found in a directory structure that looks something like this
/phil-lwc/snapshots/63c75f99-17e1-4b18-b4c7-43b474940192/opscenter_adhoc_2014-12-17-20-22-57-UTC/backup.json
  |                            |                                            |
  bucket name                  |                                      snapshot name
                              cassandra host id unique to each node

{
    "checksums": {
        "OpsCenter-events-jb-1-CompressionInfo.db": "3748e83735796d180be2592e46cebf14",