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我正在使用 PyHive 0.6.1 在 Hive 中运行一个较长的插入查询，thrift.transport.TTransport.TTransportException: TSocket read 0 bytes运行大约 5 分钟后它失败了。在服务器端，查询一直运行直到成功完成。快速查询没有这个问题。

我无法使用相同的 python 版本在我的 Mac 上本地重现它：代码正确地等待直到查询完成。发生这种情况的环境是一个基于 python:3.6-slim 的 Docker 容器。除其他外，我正在安装 libsasl2-dev 和 libsasl2-modules 包，以及 pyhive[hive] python 包。

任何线索为什么会这样？提前致谢。

我正在使用的代码是：

import contextlib
from pyhive.hive import connect

def get_conn():
    return connect(
        host='my-host',
        port=10000,
        auth='NONE',
        username='username',
        database='database'
    )

with contextlib.closing(get_conn()) as conn, \
        contextlib.closing(conn.cursor()) as cur:
    cur.execute('My long insert statement')

这是完整的追溯

Traceback (most recent call last):
  File "<stdin>", line 5, in <module>
  File "/usr/local/lib/python3.6/site-packages/pyhive/hive.py", line 364, in execute
    response = self._connection.client.ExecuteStatement(req)
  File "/usr/local/lib/python3.6/site-packages/TCLIService/TCLIService.py", line 280, in ExecuteStatement
    return self.recv_ExecuteStatement()
  File "/usr/local/lib/python3.6/site-packages/TCLIService/TCLIService.py", line 292, in recv_ExecuteStatement
    (fname, mtype, rseqid) = iprot.readMessageBegin()
  File "/usr/local/lib/python3.6/site-packages/thrift/protocol/TBinaryProtocol.py", line 134, in readMessageBegin
    sz = self.readI32()
  File "/usr/local/lib/python3.6/site-packages/thrift/protocol/TBinaryProtocol.py", line 217, in readI32
    buff = self.trans.readAll(4)
  File "/usr/local/lib/python3.6/site-packages/thrift/transport/TTransport.py", line 60, in readAll
    chunk = self.read(sz - have)
  File "/usr/local/lib/python3.6/site-packages/thrift_sasl/__init__.py", line 166, in read
    self._read_frame()
  File "/usr/local/lib/python3.6/site-packages/thrift_sasl/__init__.py", line 170, in _read_frame
    header = self._trans.readAll(4)
  File "/usr/local/lib/python3.6/site-packages/thrift/transport/TTransport.py", line 60, in readAll
    chunk = self.read(sz - have)
  File "/usr/local/lib/python3.6/site-packages/thrift/transport/TSocket.py", line 132, in read
    message='TSocket read 0 bytes')
thrift.transport.TTransport.TTransportException: TSocket read 0 bytes

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 5, in <module>
  File "/usr/local/lib/python3.6/contextlib.py", line 185, in __exit__
    self.thing.close()
  File "/usr/local/lib/python3.6/site-packages/pyhive/hive.py", line 221, in close
    response = self._client.CloseSession(req)
  File "/usr/local/lib/python3.6/site-packages/TCLIService/TCLIService.py", line 218, in CloseSession
    return self.recv_CloseSession()
  File "/usr/local/lib/python3.6/site-packages/TCLIService/TCLIService.py", line 230, in recv_CloseSession
    (fname, mtype, rseqid) = iprot.readMessageBegin()
  File "/usr/local/lib/python3.6/site-packages/thrift/protocol/TBinaryProtocol.py", line 134, in readMessageBegin
    sz = self.readI32()
  File "/usr/local/lib/python3.6/site-packages/thrift/protocol/TBinaryProtocol.py", line 217, in readI32
    buff = self.trans.readAll(4)
  File "/usr/local/lib/python3.6/site-packages/thrift/transport/TTransport.py", line 60, in readAll
    chunk = self.read(sz - have)
  File "/usr/local/lib/python3.6/site-packages/thrift_sasl/__init__.py", line 166, in read
    self._read_frame()
  File "/usr/local/lib/python3.6/site-packages/thrift_sasl/__init__.py", line 170, in _read_frame
    header = self._trans.readAll(4)
  File "/usr/local/lib/python3.6/site-packages/thrift/transport/TTransport.py", line 60, in readAll
    chunk = self.read(sz - have)
  File "/usr/local/lib/python3.6/site-packages/thrift/transport/TSocket.py", line 132, in read
    message='TSocket read 0 bytes')
thrift.transport.TTransport.TTransportException: TSocket read 0 bytes
4

1 回答 1

0

引发异常的代码如下：

  def read(self, sz):
        try:
            buff = self.handle.recv(sz)
        except socket.error as e:
            if (e.args[0] == errno.ECONNRESET and
                    (sys.platform == 'darwin' or sys.platform.startswith('freebsd'))):
                # freebsd and Mach don't follow POSIX semantic of recv
                # and fail with ECONNRESET if peer performed shutdown.
                # See corresponding comment and code in TSocket::read()
                # in lib/cpp/src/transport/TSocket.cpp.
                self.close()
                # Trigger the check to raise the END_OF_FILE exception below.
                buff = ''
            else:
                raise
        if len(buff) == 0:
            raise TTransportException(type=TTransportException.END_OF_FILE,
                                      message='TSocket read 0 bytes')
        return buff

errno.ECONNRESET我认为它可能是由于服务器故意关闭连接时可能发生的错误而引发的。（根据这个node-js-econnreset，当服务器太忙并发现连接超过 'keep-alive' 超时时，服务器可能会终止连接）

你可以查看你的服务器的日志，看看是否存在某种杀连接行为。

我不确定，只是提供我的想法。

于 2018-10-05T15:36:27.557 回答