[GitHub] spark pull request: [SPARK-10810] [SPARK-10902] [SQL] Improve sess...

[Neuw84 <gi...@git.apache.org>]

Github user Neuw84 commented on the pull request:

    https://github.com/apache/spark/pull/8909#issuecomment-169046278
  
    Since upgrading to Spark 1.6 I can´t query temp tables created from SparkStreaming using Apache Toad.
    
    The relevant Spark Streaming part.
     
                window.foreachRDD((JavaRDD<Row> rdd, Time time) -> {
                if (!rdd.isEmpty()) {
                    HiveContext sqlContext1 = JavaSQLContextSingleton.getInstance(rdd.context());
                    if (sqlContext1.isCached("issues_recent")) {
                        sqlContext1.uncacheTable("issues_recent");
                    }
                    DataFrame recentDataFrame = sqlContext1.createDataFrame(rdd, schema).coalesce(20);
                    recentDataFrame.registerTempTable("issues_recent");
                    recentDataFrame.cache();             
                }
    
    The SQLContext creation part
    class JavaSQLContextSingleton {
    
        static private transient HiveContext instance = null;
    
        static public HiveContext getInstance(SparkContext sparkContext) {
            if (instance == null) {
                instance = new HiveContext(sparkContext);
            }
            return instance;
        }
    }
    
    Without using spark streaming doesn´t help with the problem (loading parque file a registering a temporary table).
    
    I think that this "issue" may be related to this PR (maybe I am wrong and this is not the correct place to put this).
    
    Any hints?



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