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  1. ,
    via by Unknown author

    An easy way to solve OutOfMemoryError in java is to increase the maximum heap size by using JVM options -Xmx512M, this will immediately solve your OutOfMemoryError.

  2. ,
    via Stack Overflow by Eugene Yokota

    In Eclipse : go to Run --> Run Configurations --> then select the project under maven build --> then select the tab "JRE" --> then enter -Xmx1024m.

    This should increase the memory heap for all the builds/projects. The above memory size is 1 GB.

java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf( at at at at$BlockDataOutputStream.write( at at org.apache.spark.util.Utils$.writeByteBuffer(Utils.scala:183) at org.apache.spark.scheduler.DirectTaskResult$$anonfun$writeExternal$1.apply$mcV$sp(TaskResult.scala:52) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1204) at org.apache.spark.scheduler.DirectTaskResult.writeExternal(TaskResult.scala:49) at at at at at org.apache.spark.serializer.JavaSerializationStream.writeObject(JavaSerializer.scala:44) at org.apache.spark.serializer.JavaSerializerInstance.serialize(JavaSerializer.scala:101) at org.apache.spark.executor.Executor$ at java.util.concurrent.ThreadPoolExecutor.runWorker( at java.util.concurrent.ThreadPoolExecutor$ at