[
https://issues.apache.org/jira/browse/ACCUMULO-3485?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Denis Petrov updated ACCUMULO-3485:
-----------------------------------
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
{code:java}
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)
{code}
was:
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 is single point of failure, if it is down, accumulo client
cannot work
{code:java}
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)
{code}
> accumulo client tries to connect only to the first ZK in the list, making it
> SPOF
> ---------------------------------------------------------------------------------
>
> Key: ACCUMULO-3485
> URL: https://issues.apache.org/jira/browse/ACCUMULO-3485
> Project: Accumulo
> Issue Type: Bug
> Affects Versions: 1.6.1
> Reporter: Denis Petrov
> Priority: Critical
>
> 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
> {code:java}
> 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)
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
