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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2019/05/23 19:54:47 UTC
[GitHub] [incubator-druid] a2l007 opened a new issue #7741: Reindexing tasks
containing thetaSketches resulting in incorrect sketch values
a2l007 opened a new issue #7741: Reindexing tasks containing thetaSketches resulting in incorrect sketch values
URL: https://github.com/apache/incubator-druid/issues/7741
### Affected Version
0.13.0-incubating
### Description
One of our clusters running on 0.13.0 is seeing data corruption issues with thetasketches on reindexing. The basefact datasource was indexed with `maxBytesInMemory` set as -1 due to #6743 . But the reindexed slices off of this basefact has incorrect values for thetasketch columns.
**Ingestion Spec for basefact datasource:**
```
{
"type" : "index_hadoop",
"id" : "index_base",
"spec" : {
"dataSchema" : {
"dataSource" : "basefact",
"parser" : {
"type" : "avro_hadoop",
"parseSpec" : {
"format" : "avro",
"timestampSpec" : {
"column" : "date",
"format" : "yyyyMMdd"
},
"dimensionsSpec" : {
"dimensions" : [ "src_pty_id" ]
}
}
},
"metricsSpec" : [ {
"type" : "thetaSketch",
"name" : "test_sketch",
"fieldName" : "test_sketch",
"size" : 1048576,
"shouldFinalize" : true,
"isInputThetaSketch" : true,
"errorBoundsStdDev" : null
} ],
"granularitySpec" : {
"type" : "uniform",
"segmentGranularity" : "DAY",
"queryGranularity" : {
"type" : "none"
},
"rollup" : true,
"intervals" : [ "2019-05-22T00:00:00.000Z/2019-05-23T00:00:00.000Z" ]
},
"transformSpec" : {
"filter" : null,
"transforms" : [ ]
}
},
"ioConfig" : {
"type" : "hadoop",
"inputSpec" : {
"type" : "static",
"paths" : "///projects/indexData",
"inputFormat" : "org.apache.druid.data.input.avro.AvroValueInputFormat"
},
"metadataUpdateSpec" : null,
"segmentOutputPath" : null
},
"tuningConfig" : {
"type" : "hadoop",
"workingPath" : null,
"version" : "2019-05-23T08:33:19.990Z",
"partitionsSpec" : {
"type" : "hashed",
"targetPartitionSize" : 1050000,
"maxPartitionSize" : 1575000,
"assumeGrouped" : true,
"numShards" : -1,
"partitionDimensions" : [ ]
},
"shardSpecs" : { },
"indexSpec" : {
"bitmap" : {
"type" : "concise"
},
"dimensionCompression" : "lz4",
"metricCompression" : "lz4",
"longEncoding" : "longs"
},
"maxRowsInMemory" : 150000,
"maxBytesInMemory" : -1,
"leaveIntermediate" : false,
"cleanupOnFailure" : true,
"overwriteFiles" : false,
"ignoreInvalidRows" : false,
"jobProperties" : {
"fs.permissions.umask-mode" : "027"
},
"combineText" : false,
"useCombiner" : false,
"buildV9Directly" : true,
"numBackgroundPersistThreads" : 0,
"forceExtendableShardSpecs" : false,
"useExplicitVersion" : false,
"allowedHadoopPrefix" : [ ],
"logParseExceptions" : false,
"maxParseExceptions" : 0
}
},
"hadoopDependencyCoordinates" : null,
"classpathPrefix" : null,
"context" : { },
"groupId" : "index_hadoop_basefact_2019-05-23T08:33:19.990Z",
"dataSource" : "basefact",
"resource" : {
"availabilityGroup" : "index_hadoop_basefact_2019-05-23T08:33:19.990Z",
"requiredCapacity" : 1
}
}
```
**Ingestion spec for slice datasource:**
```
{
"type" : "index_hadoop",
"id" : "index_slice",
"spec" : {
"dataSchema" : {
"dataSource" : "slice",
"parser" : {
"type" : "avro_hadoop",
"parseSpec" : {
"format" : "avro",
"timestampSpec" : {
"column" : "date",
"format" : "yyyyMMdd"
},
"dimensionsSpec" : {
"dimensions" : [ "src_pty_id" ]
}
}
},
"metricsSpec" : [ {
"type" : "thetaSketch",
"name" : "test_sketch",
"fieldName" : "test_sketch",
"size" : 131072,
"shouldFinalize" : true,
"isInputThetaSketch" : true,
"errorBoundsStdDev" : null
} ],
"granularitySpec" : {
"type" : "uniform",
"segmentGranularity" : "DAY",
"queryGranularity" : {
"type" : "none"
},
"rollup" : true,
"intervals" : [ "2019-05-22T00:00:00.000Z/2019-05-23T00:00:00.000Z" ]
},
"transformSpec" : {
"filter" : null,
"transforms" : [ ]
}
},
"ioConfig" : {
"type" : "hadoop",
"inputSpec" : {
"type" : "dataSource",
"ingestionSpec" : {
"dataSource" : "basefact",
"intervals" : [ "2019-05-22T00:00:00Z/P1D" ]
}
},
"metadataUpdateSpec" : null,
"segmentOutputPath" : null
},
"tuningConfig" : {
"type" : "hadoop",
"workingPath" : null,
"version" : "2019-05-23T08:54:27.227Z",
"partitionsSpec" : {
"type" : "hashed",
"targetPartitionSize" : 133000,
"maxPartitionSize" : 199500,
"assumeGrouped" : true,
"numShards" : -1,
"partitionDimensions" : [ ]
},
"shardSpecs" : { },
"indexSpec" : {
"bitmap" : {
"type" : "concise"
},
"dimensionCompression" : "lz4",
"metricCompression" : "lz4",
"longEncoding" : "longs"
},
"maxRowsInMemory" : 10000,
"maxBytesInMemory" : -1,
"leaveIntermediate" : false,
"cleanupOnFailure" : true,
"overwriteFiles" : false,
"ignoreInvalidRows" : false,
"jobProperties" : {
"fs.permissions.umask-mode" : "027"
},
"combineText" : false,
"useCombiner" : false,
"buildV9Directly" : true,
"numBackgroundPersistThreads" : 0,
"forceExtendableShardSpecs" : false,
"useExplicitVersion" : false,
"allowedHadoopPrefix" : [ ],
"logParseExceptions" : false,
"maxParseExceptions" : 0
}
},
"hadoopDependencyCoordinates" : null,
"classpathPrefix" : null,
"context" : { }
}
```
Querying the basefact datasource provides the result as: ` "test_sketch":43672556.4879819` while the slice datasource results in `"sids_sketch":43676771.06402646`
Still investigating the issue, but has anyone observed similar behavior?
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