How many rows does df3 have? Broadcast joins are a great way to append data stored in relatively *small* single source of truth data files to large DataFrames. DataFrames up to 2GB can be broadcasted so a data file with tens or even hundreds of thousands of rows is a broadcast candidate. Your broadcast variable is probably too large.
On Tue, Oct 6, 2020 at 11:37 AM Sachit Murarka <connectsac...@gmail.com> wrote: > Hello Users, > > I am facing an issue in spark job where I am doing row number() without > partition by clause because I need to add sequential increasing IDs. > But to avoid the large spill I am not doing row number() over the complete > data frame. > > Instead I am applying monotically_increasing id on actual data set , > then create a new data frame from original data frame which will have just > monotically_increasing id. > > So DF1 = All columns + monotically_increasing_id > DF2 = Monotically_increasingID > > Now I am applying row number() on DF2 since this is a smaller dataframe. > > DF3 = Monotically_increasingID + Row_Number_ID > > Df.join(broadcast(DF3)) > > This will give me sequential increment id in the original Dataframe. > > But below is the stack trace. > > py4j.protocol.Py4JJavaError: An error occurred while calling o180.parquet. > : org.apache.spark.SparkException: Job aborted. > at > org.apache.spark.sql.execution.datasources.FileFormatWriter$.write(FileFormatWriter.scala:198) > at > org.apache.spark.sql.execution.datasources.InsertIntoHadoopFsRelationCommand.run(InsertIntoHadoopFsRelationCommand.scala:159) > at > org.apache.spark.sql.execution.command.DataWritingCommandExec.sideEffectResult$lzycompute(commands.scala:104) > at > org.apache.spark.sql.execution.command.DataWritingCommandExec.sideEffectResult(commands.scala:102) > at > org.apache.spark.sql.execution.command.DataWritingCommandExec.doExecute(commands.scala:122) > at > org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:131) > at > org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:127) > at > org.apache.spark.sql.execution.SparkPlan$$anonfun$executeQuery$1.apply(SparkPlan.scala:155) > at > org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151) > at > org.apache.spark.sql.execution.SparkPlan.executeQuery(SparkPlan.scala:152) > at > org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:127) > at > org.apache.spark.sql.execution.QueryExecution.toRdd$lzycompute(QueryExecution.scala:80) > at > org.apache.spark.sql.execution.QueryExecution.toRdd(QueryExecution.scala:80) > at > org.apache.spark.sql.DataFrameWriter$$anonfun$runCommand$1.apply(DataFrameWriter.scala:676) > at > org.apache.spark.sql.DataFrameWriter$$anonfun$runCommand$1.apply(DataFrameWriter.scala:676) > at > org.apache.spark.sql.execution.SQLExecution$$anonfun$withNewExecutionId$1.apply(SQLExecution.scala:78) > at > org.apache.spark.sql.execution.SQLExecution$.withSQLConfPropagated(SQLExecution.scala:125) > at > org.apache.spark.sql.execution.SQLExecution$.withNewExecutionId(SQLExecution.scala:73) > at > org.apache.spark.sql.DataFrameWriter.runCommand(DataFrameWriter.scala:676) > at > org.apache.spark.sql.DataFrameWriter.saveToV1Source(DataFrameWriter.scala:285) > at > org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:271) > at > org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:229) > at > org.apache.spark.sql.DataFrameWriter.parquet(DataFrameWriter.scala:566) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244) > at > py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357) > at py4j.Gateway.invoke(Gateway.java:282) > at > py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132) > at py4j.commands.CallCommand.execute(CallCommand.java:79) > at py4j.GatewayConnection.run(GatewayConnection.java:238) > at java.lang.Thread.run(Thread.java:748) > Caused by: org.apache.spark.SparkException: Could not execute broadcast in > 1000 secs. You can increase the timeout for broadcasts via > spark.sql.broadcastTimeout or disable broadcast join by setting > spark.sql.autoBroadcastJoinThreshold to -1 > > Initially this threshold was 300. I already increased it. > > > Kind Regards, > Sachit Murarka >
