[ACCUMULO-3485] accumulo client tries to connect only to the first ZK in the list, making it SPOF

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Duplicate
• Affects Version/s: 1.6.1
• Assignee: Unassigned
• Reporter: Denis Petrov
• Created: 16/Jan/15 02:32
• Updated: 16/Jan/15 02:34
• Resolved: 16/Jan/15 02:34

Description

Accumulo client tries to connect only to the first ZK server.
If that single ZK server is down, the accumulo client does not try other ZK servers.
Thus the first ZK server is the single point of failure.
If it is down, accumulo client cannot work

  val instance = new ZooKeeperInstance("zzz", "no-zk-here.example.com,zk1.example.com,zk2.example.com,zk3.example.com")
  val conn = instance.getConnector("root", "pass".getBytes)
  println("db connected, tables=" + conn.tableOperations.list)

Issue Links

• duplicates: ACCUMULO-3218 ZooKeeperInstance only uses first ZooKeeper in list of quorum