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d60df19249
This patch enables the shell to pass query strings as-is to Impala's parser. In order to preserve previous behaviour, we transform multi-line queries before writing them to history. We replace EOL with an obscure ascii character (DLE), and re-apply the transformation when reading it back from history. Change-Id: I021b9c3d50b03df73bea1afd6ce3ec6b413484e0 Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4664 Reviewed-by: Ishaan Joshi <ishaan@cloudera.com> Tested-by: jenkins Conflicts: shell/impala_shell.py
50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
#!/usr/bin/env python
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# encoding=utf-8
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# Copyright 2014 Cloudera Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import psutil
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PY_CMD = "%s/shell/impala_shell.py" % os.environ['IMPALA_HOME']
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class ImpalaShellResult(object):
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def __init__(self):
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self.rc = 0
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self.stdout = str()
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self.stderr = str()
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def get_shell_cmd_result(process):
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result = ImpalaShellResult()
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result.stdout, result.stderr = process.communicate()
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result.rc = process.returncode
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return result
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def cancellation_helper(args=None):
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shell_pid = -1
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for proc in psutil.process_iter():
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if proc.cmdline:
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# proc.cmdline does not contain the double quotes that args does so remove them
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# find last process with the path of impala_shell.py
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if args:
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proc_name = "python %s %s" % (PY_CMD, args.replace("\"", ""))
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else:
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proc_name = "python %s" % PY_CMD
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if " ".join(proc.cmdline) == proc_name:
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shell_pid = proc.pid
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# check to see if no process was found
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if shell_pid == -1:
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raise Exception("No process impala_shell.py found to interrupt")
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return shell_pid
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