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https://issues.apache.org/jira/browse/IOTDB-4760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17624258#comment-17624258
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Haonan Hou commented on IOTDB-4760:
-----------------------------------
Hi, you need to execute session.open before execute
session.executeQueryStatement.
> [connection]connect iotdb cluster with the nodUrls method of session builder,
> failed
> -------------------------------------------------------------------------------------
>
> Key: IOTDB-4760
> URL: https://issues.apache.org/jira/browse/IOTDB-4760
> Project: Apache IoTDB
> Issue Type: Bug
> Affects Versions: 0.14.0-SNAPSHOT
> Reporter: changxue
> Assignee: Haonan Hou
> Priority: Major
>
> [connection]connect iotdb cluster with the nodUrls method of session builder,
> failed
> environment:
> 3C3D cluster with the latest source codes of master branch
>
> test codes:
> {code:java}
> List<String> node_list = new ArrayList<>(3);
> node_list.add("172.20.70.44:6667");
> node_list.add("172.20.70.45:6667");
> node_list.add("172.20.70.46:6667");
> Session session = new Session.Builder()
> .nodeUrls(node_list)
> .build();
> session.executeQueryStatement("show storage group "); {code}
> It throws NPE on the laster statement.
>
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