xiangdong Huang created IOTDB-131:
-------------------------------------
Summary: IoTDB-Grafana module error when getting the timeseries
list from Grafana
Key: IOTDB-131
URL: https://issues.apache.org/jira/browse/IOTDB-131
Project: Apache IoTDB
Issue Type: Bug
Reporter: xiangdong Huang
Hi,
when I installed the Grafana, installed the grafana-simple-json plugin, and
tried to use iotdb-grafana to show data from IoTDB using Grafana. The
IoTDB-grafana module printed errors:
```
java.lang.NullPointerException: null
at
org.apache.iotdb.jdbc.IoTDBDatabaseMetadata.getColumnsFunc(IoTDBDatabaseMetadata.java:79)
~[classes/:na]
at
org.apache.iotdb.jdbc.IoTDBDatabaseMetadata.getColumns(IoTDBDatabaseMetadata.java:53)
~[classes/:na]
at
org.apache.iotdb.web.grafana.dao.impl.BasicDaoImpl$1.doInConnection(BasicDaoImpl.java:59)
~[classes/:na]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:353)
~[spring-jdbc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at
org.apache.iotdb.web.grafana.dao.impl.BasicDaoImpl.getMetaData(BasicDaoImpl.java:69)
~[classes/:na]
at
org.apache.iotdb.web.grafana.dao.impl.BasicDaoImpl$$FastClassBySpringCGLIB$$c48003da.invoke(<generated>)
~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
~[spring-core-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
~[spring-aop-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
~[spring-aop-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at
org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
~[spring-tx-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
~[spring-aop-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
~[spring-aop-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at
org.apache.iotdb.web.grafana.dao.impl.BasicDaoImpl$$EnhancerBySpringCGLIB$$9869800c.getMetaData(<generated>)
~[classes/:na]
```
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
