python - 使用 stdout Popen 捕获 sqoop 日志

Question

下面是我运行来调用 sqoop 的 python 代码，但是除了下面几行之外，这并没有捕获日志

警告:/usr/hdp/2.6.4.0-91/accumulo 不存在! Accumulo 导入将会失败。 请将 $ACCUMULO_HOME 设置为 Accumulo 安装的根目录。

import subprocess
job = "sqoop-import --direct --connect 'jdbc:sqlserver://host' --username myuser --password-file /user/ivr_sqoop --table data_app_det  --delete-target-dir   --verbose --split-by attribute_name_id --where \"db_process_time BETWEEN ('2018-07-15') and ('9999-12-31')\""
print job
with open('save.txt','w') as fp:
    proc = subprocess.Popen(job, stdout=fp, stderr=subprocess.PIPE, shell=True)
    stdout, stderr = proc.communicate()
    print "Here is the return code :: " + str(proc.returncode)
    print stdout`

如果我的通话方式有问题，请告诉我。

注意:单个 sqoop cmd 运行良好并生成所有日志。

我也尝试了下面的方法，结果是一样的

import subprocess
job = "sqoop-import --direct --connect 'jdbc:sqlserver://host' --username myuser --password-file /user/ivr_sqoop --table data_app_det  --delete-target-dir   --verbose --split-by attribute_name_id --where \"db_process_time BETWEEN ('2018-07-15') and ('9999-12-31')\""
proc = subprocess.Popen(job, stdout=subprocess.PIPE,stderr=subprocess.PIPE, shell=True)
stdout, stderr = proc.communicate()

并且还在 cmd 末尾使用“2> mylog.log”

import subprocess
job = "sqoop-import --direct --connect 'jdbc:sqlserver://host' --username myuser --password-file /user/ivr_sqoop --table data_app_det  --delete-target-dir   --verbose --split-by attribute_name_id --where \"db_process_time BETWEEN ('2018-07-15') and ('9999-12-31')\" > mylog.log "
proc = subprocess.Popen(job, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
stdout, stderr = proc.communicate()

我发现了以下类似的问题，但也没有答案。

Subprocess Popen : Ignore Accumulo warning and continue execution of Sqoop

Answer 1

由于您添加了 shell=True，因此它不会捕获 Sqoop 日志。请从命令中删除 shell=True 并添加 universal_newlines=True，它将显示控制台日志。

工作代码:

import subprocess
import logging
logging.basicConfig(format='%(levelname)s:%(message)s', level=logging.DEBUG)
# Function to run Hadoop command
def run_unix_cmd(args_list):
    """
    run linux commands
    """
    print('Running system command: {0}'.format(' '.join(args_list)))
    proc = subprocess.Popen(args_list, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
    s_output, s_err = proc.communicate()
    s_return =  proc.returncode
    return s_return, s_output, s_err

# Create Sqoop Job
def sqoop_job():
    """
    Create Sqoop job
    """
    cmd = ['sqoop', 'import', '--connect', 'jdbc:oracle:thin:@//host:port/schema', '--username', 'user','--password', 'XX', '--query', '"your query"', '-m', '1', '--target-dir', 'tgt_dir']
    print(cmd)
    (ret, out, err) = run_unix_cmd(cmd)
    print(ret, out, err)
    if ret == 0:
        logging.info('Success.')
    else:
        logging.info('Error.')

if __name__ == '__main__':
    sqoop_job()