Archana H created LENS-1350:
-------------------------------
Summary: Result formatting is throwing NPE when the result from
druid driver is empty
Key: LENS-1350
URL: https://issues.apache.org/jira/browse/LENS-1350
Project: Apache Lens
Issue Type: Bug
Components: driver-jdbc
Reporter: Archana H
Error:
{CODE}
05 Oct 2016 10:55:29 [3f290017-e51d-4183-8f89-0f3045cc52dc]
[ResultFormatter_AsyncThread-7] INFO
org.apache.lens.server.api.query.QueryContext - Registering driver resultset
for query 3f290017-e51d-4183-8f89-0f3045cc52dc
05 Oct 2016 10:55:29 [3f290017-e51d-4183-8f89-0f3045cc52dc]
[454e896f-65b0-4c9d-b282-190f00affccf grizzly-http-server-19] INFO
org.apache.hadoop.hive.conf.HiveConf - Using the default value passed in for
log id: 454e896f-65b0-4c9d-b282-190f00affccf
05 Oct 2016 10:55:29 [3f290017-e51d-4183-8f89-0f3045cc52dc]
[454e896f-65b0-4c9d-b282-190f00affccf grizzly-http-server-19] INFO
org.apache.lens.server.query.QueryExecutionServiceImpl - Updating status for
3f290017-e51d-4183-8f89-0f3045cc52dc
05 Oct 2016 10:55:29 [3f290017-e51d-4183-8f89-0f3045cc52dc]
[ResultFormatter_AsyncThread-7] ERROR org.apache.lens.driver.jdbc.JDBCResultSet
- Error getting JDBC type information: null
java.lang.NullPointerException: null
at
org.apache.lens.driver.jdbc.JDBCResultSet.getRsMetadata(JDBCResultSet.java:87)
~[lens-driver-jdbc-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
org.apache.lens.driver.jdbc.JDBCResultSet.getMetadata(JDBCResultSet.java:112)
~[lens-driver-jdbc-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
org.apache.lens.server.api.driver.PartiallyFetchedInMemoryResultSet.<init>(PartiallyFetchedInMemoryResultSet.java:94)
[lens-server-api-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
org.apache.lens.server.api.query.QueryContext.registerDriverResult(QueryContext.java:514)
[lens-server-api-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
org.apache.lens.server.api.driver.AbstractLensDriver.fetchResultSet(AbstractLensDriver.java:69)
[lens-server-api-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
org.apache.lens.server.query.QueryExecutionServiceImpl.getDriverResultset(QueryExecutionServiceImpl.java:1835)
[classes/:na]
at
org.apache.lens.server.query.ResultFormatter.formatOutput(ResultFormatter.java:91)
[classes/:na]
at
org.apache.lens.server.query.ResultFormatter.process(ResultFormatter.java:73)
[classes/:na]
at
org.apache.lens.server.query.ResultFormatter.process(ResultFormatter.java:43)
[classes/:na]
at
org.apache.lens.server.api.events.AsyncEventListener$1.run(AsyncEventListener.java:110)
[lens-server-api-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[na:1.8.0_40]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[na:1.8.0_40]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40]
05 Oct 2016 10:55:29 [3f290017-e51d-4183-8f89-0f3045cc52dc]
[ResultFormatter_AsyncThread-7] WARN
org.apache.lens.server.query.ResultFormatter - Exception while formatting
result for 3f290017-e51d-4183-8f89-0f3045cc52dc
java.lang.NullPointerException: null
at
org.apache.lens.driver.jdbc.JDBCResultSet.hasNext(JDBCResultSet.java:306)
~[lens-driver-jdbc-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
org.apache.lens.server.api.driver.PartiallyFetchedInMemoryResultSet.preFetchRows(PartiallyFetchedInMemoryResultSet.java:104)
~[lens-server-api-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
org.apache.lens.server.api.driver.PartiallyFetchedInMemoryResultSet.<init>(PartiallyFetchedInMemoryResultSet.java:95)
~[lens-server-api-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
org.apache.lens.server.api.query.QueryContext.registerDriverResult(QueryContext.java:514)
~[lens-server-api-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
org.apache.lens.server.api.driver.AbstractLensDriver.fetchResultSet(AbstractLensDriver.java:69)
~[lens-server-api-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
org.apache.lens.server.query.QueryExecutionServiceImpl.getDriverResultset(QueryExecutionServiceImpl.java:1835)
~[classes/:na]
at
org.apache.lens.server.query.ResultFormatter.formatOutput(ResultFormatter.java:91)
[classes/:na]
at
org.apache.lens.server.query.ResultFormatter.process(ResultFormatter.java:73)
[classes/:na]
at
org.apache.lens.server.query.ResultFormatter.process(ResultFormatter.java:43)
[classes/:na]
at
org.apache.lens.server.api.events.AsyncEventListener$1.run(AsyncEventListener.java:110)
[lens-server-api-2.7.0-SNAPSHOT.jar:2.7.0-SNAPSHOT]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[na:1.8.0_40]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[na:1.8.0_40]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40]
{CODE}
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