RuntimeError:由于弃用:ConvertStrings无法启动JVM

Question

我在更新Amazon Athena表的EMR群集上运行了自动化的Python作业。

它一直运行良好，直到几天前(在Python 2.7和3.7上(。这是脚本：

from pyathenajdbc import connect
import yaml
config = yaml.load(open('athena-config.yaml', 'r'))
statements = config['statements']
staging_dir = config['staging_dir']
conn = connect(s3_staging_dir=staging_dir, region_name='eu-west-1')
try:
    with conn.cursor() as cursor:
        for statement in statements:
            cursor.execute(statement)
finally:
    conn.close()

achena-config.yaml有一个分期目录和几个雅典娜的陈述。

这是错误：

You are using pip version 9.0.3, however version 19.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Unrecognized option: -server
create_tables.py:5: YAMLLoadWarning: calling yaml.load() without Loader=... is deprecated, as the default Loader is unsafe. Please read https://msg.pyyaml.org/load for full details.
  config = yaml.load(open('athena-config.yaml', 'r'))
/mnt/conda/lib/python3.7/site-packages/jpype/_core.py:210: UserWarning: 
-------------------------------------------------------------------------------
Deprecated: convertStrings was not specified when starting the JVM. The default
behavior in JPype will be False starting in JPype 0.8. The recommended setting
for new code is convertStrings=False.  The legacy value of True was assumed for
this session. If you are a user of an application that reported this warning,
please file a ticket with the developer.
-------------------------------------------------------------------------------
  """)
Traceback (most recent call last):
  File "create_tables.py", line 10, in <module>
    region_name='eu-west-1')
  File "/mnt/conda/lib/python3.7/site-packages/pyathenajdbc/__init__.py", line 69, in connect
    driver_path, log4j_conf, **kwargs)
  File "/mnt/conda/lib/python3.7/site-packages/pyathenajdbc/connection.py", line 68, in __init__
    self._start_jvm(jvm_path, jvm_options, driver_path, log4j_conf)
  File "/mnt/conda/lib/python3.7/site-packages/pyathenajdbc/util.py", line 25, in _wrapper
    return wrapped(*args, **kwargs)
  File "/mnt/conda/lib/python3.7/site-packages/pyathenajdbc/connection.py", line 97, in _start_jvm
    jpype.startJVM(jvm_path, *args)
  File "/mnt/conda/lib/python3.7/site-packages/jpype/_core.py", line 219, in startJVM
    _jpype.startup(jvmpath, tuple(args), ignoreUnrecognized, convertStrings)
RuntimeError: Unable to start JVM
    at loadJVM(native/common/jp_env.cpp:169)
    at loadJVM(native/common/jp_env.cpp:179)
    at startup(native/python/pyjp_module.cpp:159)

据我了解，转换量的问题被弃用。谁能帮我解决这个问题？我不明白为什么这种""")是在追溯之前出现的，以及过去几天的变化以打破代码。谢谢！

Answer 1

今天遇到了同样的问题。尝试将JPYPE1降级至0.6.3。jpype1今天发布了0.7.0，与旧接口不兼容。

Answer 2

问题似乎是该软件包用未识别的参数-server调用JVM。以前的版本忽略了允许事情进行的错误。要以0.7.0获得相同的行为，需要将标志ignoreUnrecognized设置为True。可能需要将其发送到pyathenajdbc，以纠正将伪造参数放入startJVM的缺陷。

查看源-server被硬编码到模块中。

if not jpype.isJVMStarted():
            _logger.debug('JVM path: %s', jvm_path)
            args = [
                '-server',
                '-Djava.class.path={0}'.format(driver_path),
                '-Dlog4j.configuration=file:{0}'.format(log4j_conf)
            ]
            if jvm_options:
                args.extend(jvm_options)
            _logger.debug('JVM args: %s', args)
            jpype.startJVM(jvm_path, *args)
            cls.class_loader = jpype.java.lang.Thread.currentThread().getContextClassLoader()

它假设接受-server作为参数的特定JVM。