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Posted to issues@hbase.apache.org by "Lars Hofhansl (JIRA)" <ji...@apache.org> on 2013/03/04 22:55:14 UTC
[jira] [Commented] (HBASE-7111) hbase zkcli will not start if the
zookeeper server chosen to connect to is unavailable
[ https://issues.apache.org/jira/browse/HBASE-7111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13592682#comment-13592682 ]
Lars Hofhansl commented on HBASE-7111:
--------------------------------------
Patch applies with just some offset to 0.94. Going to commit.
> hbase zkcli will not start if the zookeeper server chosen to connect to is unavailable
> --------------------------------------------------------------------------------------
>
> Key: HBASE-7111
> URL: https://issues.apache.org/jira/browse/HBASE-7111
> Project: HBase
> Issue Type: Bug
> Components: Zookeeper
> Affects Versions: 0.94.2
> Reporter: Zhou wenjian
> Assignee: Zhou wenjian
> Fix For: 0.95.0, 0.98.0, 0.94.6
>
> Attachments: HBASE-7111-trunk.patch, HBASE-7111-trunk-v2.patch
>
>
> there are 3 zookeeper servers in my cluster.
> s1
> s2
> s3
> after killing s3, i found the hbase zkcli will not start again.
> it will try to connect to s3 continuely.
> /11/07 11:01:01 INFO zookeeper.ClientCnxn: Opening socket connection to server s3
> 12/11/07 11:01:01 WARN zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
> java.net.ConnectException: Connection refused
> from the code
> {code}
> public String parse(final Configuration c) {
> // Note that we do not simply grab the property
> // HConstants.ZOOKEEPER_QUORUM from the HBaseConfiguration because the
> // user may be using a zoo.cfg file.
> Properties zkProps = ZKConfig.makeZKProps(c);
> String host = null;
> String clientPort = null;
> for (Entry<Object, Object> entry: zkProps.entrySet()) {
> String key = entry.getKey().toString().trim();
> String value = entry.getValue().toString().trim();
> if (key.startsWith("server.") && host == null) {
> String[] parts = value.split(":");
> host = parts[0];
> } else if (key.endsWith("clientPort")) {
> clientPort = value;
> }
> if (host != null && clientPort != null) break;
> }
> return host != null && clientPort != null? host + ":" + clientPort: null;
> }
> {code}
> the code will choose the fixed zookeeper server (here is the unavailable s3), which leads to the script fails
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