Python 数据流批处理作业未扩展
我的数据流作业(作业ID:2020-08-18_07_55_15-14428306650890914471)没有扩展到超过1个工作线程,尽管数据流将目标工作线程设置为1000个 该作业被配置为查询Google Patents BigQuery数据集,使用ParDo自定义函数和transformers(huggingface)库标记文本,序列化结果,并将所有内容写入一个巨大的拼花地板文件 我假设(在昨天运行作业之后,它映射了一个函数而不是使用beam.DoFn类),问题是一些非并行对象消除了缩放;因此,需要将标记化过程重构为一个类 以下是使用以下命令从命令行运行的脚本:Python 数据流批处理作业未扩展,python,google-cloud-platform,google-compute-engine,google-cloud-dataflow,apache-beam,Python,Google Cloud Platform,Google Compute Engine,Google Cloud Dataflow,Apache Beam,我的数据流作业(作业ID:2020-08-18_07_55_15-14428306650890914471)没有扩展到超过1个工作线程,尽管数据流将目标工作线程设置为1000个 该作业被配置为查询Google Patents BigQuery数据集,使用ParDo自定义函数和transformers(huggingface)库标记文本,序列化结果,并将所有内容写入一个巨大的拼花地板文件 我假设(在昨天运行作业之后,它映射了一个函数而不是使用beam.DoFn类),问题是一些非并行对象消除了缩放;
python bq_to_parquet_pipeline_w_class.py --extra_package transformers-3.0.2.tar.gz
剧本:
import os
import re
import argparse
import google.auth
import apache_beam as beam
from apache_beam.options import pipeline_options
from apache_beam.options.pipeline_options import GoogleCloudOptions
from apache_beam.options.pipeline_options import PipelineOptions
from apache_beam.options.pipeline_options import SetupOptions
from apache_beam.runners import DataflowRunner
from apache_beam.io.gcp.internal.clients import bigquery
import pyarrow as pa
import pickle
from transformers import AutoTokenizer
print('Defining TokDoFn')
class TokDoFn(beam.DoFn):
def __init__(self, tok_version, block_size=200):
self.tok = AutoTokenizer.from_pretrained(tok_version)
self.block_size = block_size
def process(self, x):
txt = x['abs_text'] + ' ' + x['desc_text'] + ' ' + x['claims_text']
enc = self.tok.encode(txt)
for idx, token in enumerate(enc):
chunk = enc[idx:idx + self.block_size]
serialized = pickle.dumps(chunk)
yield serialized
def run(argv=None, save_main_session=True):
query_big = '''
with data as (
SELECT
(select text from unnest(abstract_localized) limit 1) abs_text,
(select text from unnest(description_localized) limit 1) desc_text,
(select text from unnest(claims_localized) limit 1) claims_text,
publication_date,
filing_date,
grant_date,
application_kind,
ipc
FROM `patents-public-data.patents.publications`
)
select *
FROM data
WHERE
abs_text is not null
AND desc_text is not null
AND claims_text is not null
AND ipc is not null
'''
query_sample = '''
SELECT *
FROM `client_name.patent_data.patent_samples`
LIMIT 2;
'''
print('Start Run()')
parser = argparse.ArgumentParser()
known_args, pipeline_args = parser.parse_known_args(argv)
'''
Configure Options
'''
# Setting up the Apache Beam pipeline options.
# We use the save_main_session option because one or more DoFn's in this
# workflow rely on global context (e.g., a module imported at module level).
options = PipelineOptions(pipeline_args)
options.view_as(SetupOptions).save_main_session = save_main_session
# Sets the project to the default project in your current Google Cloud environment.
_, options.view_as(GoogleCloudOptions).project = google.auth.default()
# Sets the Google Cloud Region in which Cloud Dataflow runs.
options.view_as(GoogleCloudOptions).region = 'us-central1'
# IMPORTANT! Adjust the following to choose a Cloud Storage location.
dataflow_gcs_location = 'gs://client_name/dataset_cleaned_pq_classTok'
# Dataflow Staging Location. This location is used to stage the Dataflow Pipeline and SDK binary.
options.view_as(GoogleCloudOptions).staging_location = f'{dataflow_gcs_location}/staging'
# Dataflow Temp Location. This location is used to store temporary files or intermediate results before finally outputting to the sink.
options.view_as(GoogleCloudOptions).temp_location = f'{dataflow_gcs_location}/temp'
# The directory to store the output files of the job.
output_gcs_location = f'{dataflow_gcs_location}/output'
print('Options configured per GCP Notebook Examples')
print('Configuring BQ Table Schema for Beam')
#Write Schema (to PQ):
schema = pa.schema([
('block', pa.binary())
])
print('Starting pipeline...')
with beam.Pipeline(runner=DataflowRunner(), options=options) as p:
res = (p
| 'QueryTable' >> beam.io.Read(beam.io.BigQuerySource(query=query_big, use_standard_sql=True))
| beam.ParDo(TokDoFn(tok_version='gpt2', block_size=200))
| beam.Map(lambda x: {'block': x})
| beam.io.WriteToParquet(os.path.join(output_gcs_location, f'pq_out'),
schema,
record_batch_size=1000)
)
print('Pipeline built. Running...')
if __name__ == '__main__':
import logging
logging.getLogger().setLevel(logging.INFO)
logging.getLogger("transformers.tokenization_utils_base").setLevel(logging.ERROR)
run()
解决方案有两个方面: 当我运行作业时,超出了以下配额,全部在“计算引擎API”下(在此处查看配额:):
- CPU(我要求增加到50个)
- 永久磁盘标准(GB)(我要求增加到12500)
- 使用IP地址(我要求增加到50)
python bq_to_parquet_pipeline_w_class.py --extra_package transformers-3.0.2.tar.gz --max_num_workers 22
我开始缩放
总而言之,如果有一种方法可以在达到配额时通过数据流控制台提示用户,并提供一种简单的方法来请求增加该配额(以及建议的补充配额),那就太好了,以及增加的请求数量的建议。看起来您没有足够的配额来启动1000台机器。我可以问一下您在哪里看到的吗?请注意,目标工作人员设置为1000,而实际工作人员的数量保持在1。我没有收到通知说我正在尝试超过任何配额,因此我不太确定在哪里可以查看:增加我的配额。请检查/iam admin/quotasts/details以了解计算引擎CPU是否有足够的配额来启动1000个工人。目标工作进程的数量表示数据流需要多少台机器,并且不受您的配额限制。@PeterKim my us-central-1 Compute Engine API CPU的配额为24,页面上显示我当前使用的是1。是不是因为Dataflow试图直接扩展到1000,它没有注意到它可以扩展到24并停止在那里?好像有人已经抓到了那只虫子。