java.lang.NullPointerException

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Take a look at this blog post on how to set up Grid2 https://goo.gl/rxzbE6. A user related (in the email group on the source) that using older selenium libs solves this exception.

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    • java.lang.NullPointerException: Value column [country] missing data in line [{"userName":"username","country":null,"email":"us...@example.com","gender":"U","cellphone":"+123456789","age":"1983"}] at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:253)[guava-16.0.1.jar:?] at io.druid.query.lookup.namespace.URIExtractionNamespace$DelegateParser.parse(URIExtractionNamespace.java:220)[?:?] at io.druid.data.input.MapPopulator$1.processLine(MapPopulator.java:67)[?:?] at com.google.common.io.CharStreams.readLines(CharStreams.java:317)[guava-16.0.1.jar:?] at com.google.common.io.CharSource.readLines(CharSource.java:239)[guava-16.0.1.jar:?] at io.druid.data.input.MapPopulator.populate(MapPopulator.java:59)[?:?] at io.druid.server.lookup.namespace.URIExtractionNamespaceCacheFactory$1$1.call(URIExtractionNamespaceCacheFactory.java:177)[?:?] at io.druid.server.lookup.namespace.URIExtractionNamespaceCacheFactory$1$1.call(URIExtractionNamespaceCacheFactory.java:130)[?:?] at com.metamx.common.RetryUtils.retry(RetryUtils.java:60)[java-util-0.27.9.jar:?] at com.metamx.common.RetryUtils.retry(RetryUtils.java:78)[java-util-0.27.9.jar:?] at io.druid.server.lookup.namespace.URIExtractionNamespaceCacheFactory$1.call(URIExtractionNamespaceCacheFactory.java:128)[druid-lookups-cached-global-0.9.1.1.jar:0.9.1.1] at io.druid.server.lookup.namespace.URIExtractionNamespaceCacheFactory$1.call(URIExtractionNamespaceCacheFactory.java:73)[druid-lookups-cached-global-0.9.1.1.jar:0.9.1.1] at io.druid.server.lookup.namespace.cache.NamespaceExtractionCacheManager$4.run(NamespaceExtractionCacheManager.java:361)[druid-lookups-cached-global-0.9.1.1.jar:0.9.1.1] at com.google.common.util.concurrent.MoreExecutors$ScheduledListeningDecorator$NeverSuccessfulListenableFutureTask.run(MoreExecutors.java:582)[guava-16.0.1.jar:?] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[?:1.8.0_91] at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)[?:1.8.0_91] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)[?:1.8.0_91] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)[?:1.8.0_91] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[?:1.8.0_91] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[?:1.8.0_91] at java.lang.Thread.run(Thread.java:745)[?:1.8.0_91]

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