[jira] [Created] (KYLIN-2429) Variable initialized should be declared volatile in SparkCubingByLayer#execute()

["Ted Yu (JIRA)" <ji...@apache.org>]

Ted Yu created KYLIN-2429:
-----------------------------

             Summary: Variable initialized should be declared volatile in SparkCubingByLayer#execute()
                 Key: KYLIN-2429
                 URL: https://issues.apache.org/jira/browse/KYLIN-2429
             Project: Kylin
          Issue Type: Bug
            Reporter: Ted Yu


{code}
        final JavaPairRDD<ByteArray, Object[]> encodedBaseRDD = intermediateTable.javaRDD().mapToPair(new PairFunction<Row, ByteArray, Object[]>() {
            transient boolean initialized = false;
...
            public Tuple2<ByteArray, Object[]> call(Row row) throws Exception {
                if (initialized == false) {
                    synchronized (SparkCubingByLayer.class) {
                        if (initialized == false) {
{code}
For double checked locking to work, initialized needs to be volatile.



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