2017-10-16 92 views
0

我以前使用conda構建了pyspark環境來打包所有的依賴關係,並在運行時將它們發送到所有節點。以下是我創造環境:壓縮Conda環境打破Audioread的後端(Python/Pyspark)

`conda/bin/conda create -p conda_env --copy -y python=2 \ 
numpy scipy ffmpeg gcc libsndfile gstreamer pygobject audioread librosa` 

`zip -r conda_env.zip conda_env` 

然後採購conda_env和運行pyspark殼,我可以成功執行:未經環境

`import librosa 
y, sr = librosa.load("test.m4a")` 

說明來源的錯誤這個腳本結果的ffmpeg/GStreamer的不安裝在我的本地。

將腳本提交給集羣會導致librosa.load錯誤,該錯誤可追溯到audioread,指示在壓縮歸檔環境中無法再找到後端(gstreamer或ffmpeg)。堆棧跟蹤低於:

提交:

`PYSPARK_PYTHON=./NODE/conda_env/bin/python spark-submit --verbose \ 
     --conf spark.yarn.appMasterEnv.PYSPARK_PYTHON=./NODE/conda_env/bin/python \ 
     --conf spark.yarn.appMasterEnv.PYTHON_EGG_CACHE=/tmp \ 
     --conf spark.executorEnv.PYTHON_EGG_CACHE=/tmp \ 
     --conf spark.yarn.executor.memoryOverhead=1024 \ 
     --conf spark.hadoop.validateOutputSpecs=false \ 
     --conf spark.driver.cores=5 \ 
     --conf spark.driver.maxResultSize=0 \ 
     --master yarn --deploy-mode cluster --queue production \ 
     --num-executors 20 --executor-cores 5 --executor-memory 40G \ 
     --driver-memory 20G --archives conda_env.zip#NODE \ 
     --jars /data/environments/sqljdbc41.jar \ 
     script.py` 

跟蹤:

`Caused by: org.apache.spark.api.python.PythonException: Traceback (most recent call last): 
    File "/mnt/yarn/usercache/user/appcache/application_1506634200253_39889/container_1506634200253_39889_01_000003/pyspark.zip/pyspark/worker.py", line 172, in main 
    process() 
    File "/mnt/yarn/usercache/user/appcache/application_1506634200253_39889/container_1506634200253_39889_01_000003/pyspark.zip/pyspark/worker.py", line 167, in process 
    serializer.dump_stream(func(split_index, iterator), outfile) 
    File "/mnt/yarn/usercache/user/appcache/application_1506634200253_39889/container_1506634200253_39889_01_000003/pyspark.zip/pyspark/serializers.py", line 263, in dump_stream 
    vs = list(itertools.islice(iterator, batch)) 
    File "script.py", line 245, in <lambda> 
    File "script.py", line 119, in download_audio 
    File "/mnt/yarn/usercache/user/appcache/application_1506634200253_39889/container_1506634200253_39889_01_000003/NODE/conda_env/lib/python2.7/site-packages/librosa/core/audio.py", line 107, in load 
    with audioread.audio_open(os.path.realpath(path)) as input_file: 
    File "/mnt/yarn/usercache/user/appcache/application_1506634200253_39889/container_1506634200253_39889_01_000003/NODE/conda_env/lib/python2.7/site-packages/audioread/__init__.py", line 114, in audio_open 
    raise NoBackendError() 
NoBackendError` 

我的問題是:我怎麼能打包此存檔,以便librosa(真的audioread)是目前能找到的後端並加載.m4a文件?

回答

0

這是一個路徑問題,執行者無法找到FFMPEG,儘管它是在conda環境中打包的。這個破解修復了它。

path = os.getenv("PATH") 
if "./NODE/conda_env/bin" not in path: 
    path += os.pathsep + "./NODE/conda_env/bin" 
    os.environ["PATH"] = path 
y, _ = librosa.load(audiofn, self.conf.sr)