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Posted to issues@carbondata.apache.org by "Geetika Gupta (JIRA)" <ji...@apache.org> on 2018/01/31 06:47:00 UTC
[jira] [Resolved] (CARBONDATA-1991) Select query from a streaming
table throws ClassCastException
[ https://issues.apache.org/jira/browse/CARBONDATA-1991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Geetika Gupta resolved CARBONDATA-1991.
---------------------------------------
Resolution: Fixed
> Select query from a streaming table throws ClassCastException
> -------------------------------------------------------------
>
> Key: CARBONDATA-1991
> URL: https://issues.apache.org/jira/browse/CARBONDATA-1991
> Project: CarbonData
> Issue Type: Bug
> Components: data-query
> Affects Versions: 1.3.0
> Environment: spark2.1
> Reporter: Geetika Gupta
> Assignee: anubhav tarar
> Priority: Major
> Fix For: 1.3.0
>
> Attachments: 2000_UniqData.csv
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> Start spark shell using:
> ./bin/spark-shell --jars carbonlib/carbondata_2.11-1.3.0-SNAPSHOT-shade-hadoop2.7.2.jar
> Execute the following code:
> import org.apache.spark.sql.SparkSession
> import org.apache.spark.sql.CarbonSession._
> val carbon = SparkSession.builder().config(sc.getConf) .getOrCreateCarbonSession("hdfs://localhost:54311/newCarbonStore","/tmp")
> import org.apache.carbondata.core.constants.CarbonCommonConstants
> import org.apache.carbondata.core.util.CarbonProperties
> CarbonProperties.getInstance().addProperty(CarbonCommonConstants.CARBON_BAD_RECORDS_ACTION, "FORCE")
> carbon.sql("drop table if exists uniqdata_stream")
> carbon.sql("create table uniqdata_stream(CUST_ID int,CUST_NAME String,DOB timestamp,DOJ timestamp, BIGINT_COLUMN1 bigint,BIGINT_COLUMN2 bigint,DECIMAL_COLUMN1 decimal(30,10),DECIMAL_COLUMN2 decimal(36,10),Double_COLUMN1 double, Double_COLUMN2 double,INTEGER_COLUMN1 int) STORED BY 'org.apache.carbondata.format' TBLPROPERTIES ('TABLE_BLOCKSIZE'= '256 MB', 'streaming'='true')");
> import carbon.sqlContext.implicits._
> val lines = carbon.readStream
> .format("socket")
> .option("host", "localhost")
> .option("port", 9999)
> .load()
> Now start a server socket using:
> nc -lk 9999
> and write the 2000_uniqdata.csv data to that terminal
> Now execute the following on spark shell
> val qry = lines.writeStream
> .format("carbondata")
> .option("checkpointLocation","/newtmp1")
> .option("dbName", "default")
> .option("tableName", "uniqdata_stream")
> .start()
> qry.awaitTermination()
> Stop your socket and spark-shell when you are done with data writing,
> Again start the spark-shell and perform the following query:
> carbon.sql("select * from uniqdata_stream").show
> It throws the following exception:
> 18/01/05 18:25:04 ERROR Executor: Exception in task 0.0 in stage 0.0 (TID 0)
> java.lang.ClassCastException: java.math.BigDecimal cannot be cast to org.apache.spark.sql.types.Decimal
> at org.apache.carbondata.hadoop.streaming.CarbonStreamRecordReader.putRowToColumnBatch(CarbonStreamRecordReader.java:702)
> at org.apache.carbondata.hadoop.streaming.CarbonStreamRecordReader.scanBlockletAndFillVector(CarbonStreamRecordReader.java:424)
> at org.apache.carbondata.hadoop.streaming.CarbonStreamRecordReader.nextColumnarBatch(CarbonStreamRecordReader.java:324)
> at org.apache.carbondata.hadoop.streaming.CarbonStreamRecordReader.nextKeyValue(CarbonStreamRecordReader.java:305)
> at org.apache.carbondata.spark.rdd.CarbonScanRDD$$anon$1.hasNext(CarbonScanRDD.scala:370)
> at org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.scan_nextBatch$(Unknown Source)
> at org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.processNext(Unknown Source)
> at org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)
> at org.apache.spark.sql.execution.WholeStageCodegenExec$$anonfun$8$$anon$1.hasNext(WholeStageCodegenExec.scala:377)
> at org.apache.spark.sql.execution.SparkPlan$$anonfun$2.apply(SparkPlan.scala:231)
> at org.apache.spark.sql.execution.SparkPlan$$anonfun$2.apply(SparkPlan.scala:225)
> at org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1$$anonfun$apply$25.apply(RDD.scala:826)
> at org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1$$anonfun$apply$25.apply(RDD.scala:826)
> at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:323)
> at org.apache.spark.rdd.RDD.iterator(RDD.scala:287)
> at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:87)
> at org.apache.spark.scheduler.Task.run(Task.scala:99)
> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:282)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
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