我有一個RDD的字典,我想獲得RDD的不同元素。然而,當我嘗試調用我怎樣才能在PySpark中獲得不同的RDD的字典?
rdd.distinct()
PySpark給我下面的錯誤
TypeError: unhashable type: 'dict'
at org.apache.spark.api.python.PythonRunner$$anon$1.read(PythonRDD.scala:166)
at org.apache.spark.api.python.PythonRunner$$anon$1.<init>(PythonRDD.scala:207)
at org.apache.spark.api.python.PythonRunner.compute(PythonRDD.scala:125)
at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:70)
at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:342)
at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:73)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
at org.apache.spark.scheduler.Task.run(Task.scala:89)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:213)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
16/02/19 16:55:56 WARN TaskSetManager: Lost task 0.0 in stage 0.0 (TID 0, localhost): org.apache.spark.api.python.PythonException: Traceback (most recent call last):
File "/usr/local/Cellar/apache-spark/1.6.0/libexec/python/lib/pyspark.zip/pyspark/worker.py", line 111, in main
process()
File "/usr/local/Cellar/apache-spark/1.6.0/libexec/python/lib/pyspark.zip/pyspark/worker.py", line 106, in process
serializer.dump_stream(func(split_index, iterator), outfile)
File "/usr/local/Cellar/apache-spark/1.6.0/libexec/python/lib/pyspark.zip/pyspark/rdd.py", line 2346, in pipeline_func
File "/usr/local/Cellar/apache-spark/1.6.0/libexec/python/lib/pyspark.zip/pyspark/rdd.py", line 2346, in pipeline_func
File "/usr/local/Cellar/apache-spark/1.6.0/libexec/python/lib/pyspark.zip/pyspark/rdd.py", line 317, in func
File "/usr/local/Cellar/apache-spark/1.6.0/libexec/python/lib/pyspark.zip/pyspark/rdd.py", line 1776, in combineLocally
File "/usr/local/Cellar/apache-spark/1.6.0/libexec/python/lib/pyspark.zip/pyspark/shuffle.py", line 238, in mergeValues
d[k] = comb(d[k], v) if k in d else creator(v)
TypeError: unhashable type: 'dict'
我有,我可以爲不同的元素使用的字典裏面的關鍵,但文件沒有按」如何解決這個問題,不能提供任何線索。
編輯:內容由字符串,數組串,和數字
EDIT 2的詞典:字典的示例...我想與等於「data_fingerprint http://stardict.sourceforge.net/Dictionaries.php下載正如@ zero323在他的評論中指出,你必須決定如何爲他們AR比較字典
{"id":"4eece341","data_fingerprint":"1707db7bddf011ad884d132bf80baf3c"}
感謝
詞典的內容究竟是什麼?你想如何散列這些? – zero323
有問題回答 – noli
這還不夠。你需要一個確切的策略來比較字典。這些不可哈希有兩個原因:可變性和未定義的順序。在你的情況下情況更糟,因爲它也包含不可取值。所以問題是什麼使字典對你有同樣的作用? – zero323