hnakamor opened a new issue #7108: Data ingestion fails on Quantiles DoublesSketch containing NULL When usingDefaultValueForNull = false URL: https://github.com/apache/incubator-druid/issues/7108 Hi All, In 0.13.0-incubating, setting usingDefaultValueForNull = false and using a quantilesDoubleSketch aggregator at ingestion containing NULL will result in the following exception during index task: ``` 2019-02-18T10:11:33,248 ERROR [task-runner-0-priority-0] org.apache.druid.indexing.common.task.IndexTask - Encountered exception in BUILD_SEGMENTS. java.lang.StringIndexOutOfBoundsException: String index out of range: 0 at java.lang.String.charAt(String.java:658) ~[?:1.8.0_191] at org.apache.druid.query.aggregation.datasketches.quantiles.DoublesSketchComplexMetricSerde$1.extractValue(DoublesSketchComplexMetricSerde.java:78) ~[?:?] at org.apache.druid.segment.incremental.IncrementalIndex$1IncrementalIndexInputRowColumnSelectorFactory$1.getObject(IncrementalIndex.java:197) ~[druid-processing-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.query.aggregation.datasketches.quantiles.DoublesSketchMergeAggregator.aggregate(DoublesSketchMergeAggregator.java:42) ~[?:?] at org.apache.druid.segment.incremental.OnheapIncrementalIndex.doAggregate(OnheapIncrementalIndex.java:253) ~[druid-processing-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.segment.incremental.OnheapIncrementalIndex.addToFacts(OnheapIncrementalIndex.java:167) ~[druid-processing-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.segment.incremental.IncrementalIndex.add(IncrementalIndex.java:610) ~[druid-processing-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.segment.realtime.plumber.Sink.add(Sink.java:181) ~[druid-server-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.segment.realtime.appenderator.AppenderatorImpl.add(AppenderatorImpl.java:246) ~[druid-server-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.segment.realtime.appenderator.BaseAppenderatorDriver.append(BaseAppenderatorDriver.java:403) ~[druid-server-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.segment.realtime.appenderator.BatchAppenderatorDriver.add(BatchAppenderatorDriver.java:106) ~[druid-server-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.indexing.common.task.IndexTask.generateAndPublishSegments(IndexTask.java:1032) ~[druid-indexing-service-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.indexing.common.task.IndexTask.run(IndexTask.java:466) [druid-indexing-service-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.indexing.overlord.SingleTaskBackgroundRunner$SingleTaskBackgroundRunnerCallable.call(SingleTaskBackgroundRunner.java:421) [druid-indexing-service-0.13.0-incubating.jar:0.13.0-incubating] at org.apache.druid.indexing.overlord.SingleTaskBackgroundRunner$SingleTaskBackgroundRunnerCallable.call(SingleTaskBackgroundRunner.java:393) [druid-indexing-service-0.13.0-incubating.jar:0.13.0-incubating] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_191] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_191] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_191] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191] ``` Ingest data: ``` 1549929600000 1 1 1549929600000 2 1 1549929600000 3 0.332583716 1 1549929600000 4 0.47188857 1 1549929700000 1 1 1549929700000 2 0.39832398 1 1549929700000 3 1 1549929700000 4 0.366082674 1 ``` Ingest Setting: ``` "parser" : { "type" : "string", "parseSpec" : { "format" : "tsv", "columns": ["timestamp", "index", "value", "extra"], "timestampSpec": { "column": "timestamp", "format": "millis" }, "dimensionsSpec" : { "dimensions" : ["index"] } } }, "metricsSpec" : [ {"type": "quantilesDoublesSketch", "name": "sketch", "fieldName": "value", "k": 128}, {"type": "count", "name": "count"} ], ```
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