File "/usr/local/lib/python3.7/site-packages/pyspark/sql/session.py", line 377, in _inferSchema raise ValueError("Some of types cannot be determined by the " ValueError: Some of types cannot be determined by the first 100 rows, please try again with sampling

这个错误是因为 Spark 无法确定数据集中某些列的类型。默认情况下，Spark 尝试从前100行中推断列的数据类型。如果数据集中的某些列有不同的数据类型或者数据集太大，Spark 可能无法推断列的数据类型。这时候可以通过使用 Spark 的 schema 推断功能手动指定列的数据类型，或者使用更大的样本来推断数据类型。具体方法可以参考 Spark 官方文档。

相关问题

Traceback (most recent call last): File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/persistence.py", line 1390, in _do_pre_synchronize query.whereclause) File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/evaluator.py", line 39, in process return meth(clause) File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/evaluator.py", line 81, in visit_clauselist evaluators = list(map(self.process, clause.clauses)) File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/evaluator.py", line 39, in process return meth(clause) File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/evaluator.py", line 111, in visit_binary [clause.left, clause.right])) File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/evaluator.py", line 39, in process return meth(clause) File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/evaluator.py", line 42, in visit_grouping return self.process(clause.element) File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/evaluator.py", line 39, in process return meth(clause) File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/evaluator.py", line 105, in visit_clauselist clause.operator) sqlalchemy.orm.evaluator.UnevaluatableError: Cannot evaluate clauselist with operator <function comma_op at 0x7fe3ed7800e0> During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/srv/srv_x6/thirdpart/easemob/chartmsg.py", line 229, in send_sys_msg_to_person yield QyWxManage(business_id=business_id, user={}).qywx_send_msg(business_id, user_id_list, customer_content=sns_alert_sys_msg_model) File "/srv/srv_x6/services/qyWX/qyWX_manage.py", line 889, in qywx_send_msg update({Employee.qywx_user_id: ""}) File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/query.py", line 3369, in update update_op.exec_() File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/persistence.py", line 1324, in exec_ self._do_pre_synchronize() File "/usr/local/lib/python3.7/site-packages/sqlalchemy/orm/persistence.py", line 1401, in _do_pre_synchronize 'synchronize_session parameter.' % err) sqlalchemy.exc.InvalidRequestError: Could not evaluate current criteria in Python: "Cannot evaluate clauselist with operator <function comma_op at 0x7fe3ed7800e0>". Specify 'fetch' or False for the synchronize_session parameter.

这个错误是由SQLAlchemy引起的。它发生在执行查询时，由于无法评估给定的条件，导致无法完成操作。具体来说，错误信息指出无法评估包含逗号操作符的clauselist。

解决这个问题的一种方法是在执行更新操作时，为`synchronize_session`参数指定'fetch'或False。这样可以避免在执行更新操作时尝试对查询结果进行评估。

例如，在你的代码中的`update()`方法中，你可以将`synchronize_session`参数设置为False，如下所示：

update({Employee.qywx_user_id: ""}, synchronize_session=False)

这样就可以解决这个错误，并且不会尝试对查询结果进行评估。

Traceback (most recent call last): File "/usr/local/python3/bin/pyinstaller", line 8, in <module> sys.exit(_console_script_run()) File "/usr/local/python3/lib/python3.7/site-packages/PyInstaller/__main__.py", line 194, in _console_script_run run() File "/usr/local/python3/lib/python3.7/site-packages/PyInstaller/__main__.py", line 180, in run run_build(pyi_config, spec_file, **vars(args)) File "/usr/local/python3/lib/python3.7/site-packages/PyInstaller/__main__.py", line 61, in run_build PyInstaller.building.build_main.main(pyi_config, spec_file, **kwargs) File "/usr/local/python3/lib/python3.7/site-packages/PyInstaller/building/build_main.py", line 1019, in main build(specfile, distpath, workpath, clean_build) File "/usr/local/python3/lib/python3.7/site-packages/PyInstaller/building/build_main.py", line 944, in build exec(code, spec_namespace) File "/root/test/2.spec", line 20, in <module> noarchive=False, File "/usr/local/python3/lib/python3.7/site-packages/PyInstaller/building/build_main.py", line 429, in __init__ self.__postinit__() File "/usr/local/python3/lib/python3.7/site-packages/PyInstaller/building/datastruct.py", line 184, in __postinit__ self.assemble() File "/usr/local/python3/lib/python3.7/site-packages/PyInstaller/building/build_main.py", line 764, in assemble self._check_python_library(self.binaries) File "/usr/local/python3/lib/python3.7/site-packages/PyInstaller/building/build_main.py", line 834, in _check_python_library python_lib = bindepend.get_python_library_path() File "/usr/local/python3/lib/python3.7/site-packages/PyInstaller/depend/bindepend.py", line 1018, in get_python_library_path raise IOError(msg) OSError: Python library not found: libpython3.7mu.so.1.0, libpython3.7.so, libpython3.7m.so.1.0, libpython3.7m.so, libpython3.7.so.1.0 This means your Python installation does not come with proper shared library files. This usually happens due to missing development package, or unsuitable build parameters of the Python installation. * On Debian/Ubuntu, you need to install Python development packages: * apt-get install python3-dev * apt-get install python-dev * If you are building Python by yourself, rebuild with `--enable-shared` (or, `--enable-framework` on macOS).

根据错误信息，问题出在找不到 Python 的共享库文件。这可能是由于缺少 Python 开发包或者 Python 安装时的构建参数不正确导致的。

以下是一些可能的解决方法：

1. 确保在 CentOS 上安装了适用于 Python 3.7 的开发包。可以使用以下命令安装：

   yum install python3-dev

如果你使用的是 Python 2.x，则可以使用以下命令安装：

   yum install python-dev

2. 如果你是自己构建 Python，那么需要重新构建并启用共享库支持。在重新构建时，可以使用 `--enable-shared` 参数（在 macOS 上使用 `--enable-framework`）来启用共享库支持。

请尝试上述方法，如果问题仍然存在，请提供更多关于你的操作系统和 Python 版本的详细信息，以便我能够更好地帮助你解决问题。