5698799ee3
This change adds an EDP engine for a Spark standalone cluster. The engine uses the spark-submit script and various linux commands via ssh to run, monitor, and terminate Spark jobs. Currently, the Spark engine can launch "Java" job types (this is the same type used to submit Oozie Java action on Hadoop clusters) A directory is created for each Spark job on the master node which contains jar files, the script used to launch the job, the job's stderr and stdout, and a result file containing the exit status of spark-submit. The directory is named after the Sahara job and the job execution id so it is easy to locate. Preserving these files is a big help in debugging jobs. A few general improvements are included: * engine.cancel_job() may return updated job status * engine.run_job() may return job status and fields for job_execution.extra in addition to job id Still to do: * create a proper Spark job type (new CR) * make the job dir location on the master node configurable (new CR) * add something to clean up job directories on the master node (new CR) * allows users to pass some general options to spark-submit itself (new CR) Partial implements: blueprint edp-spark-standalone Change-Id: I2c84e9cdb75e846754896d7c435e94bc6cc397ff
104 lines
3.7 KiB
Python
104 lines
3.7 KiB
Python
# Copyright (c) 2013 Mirantis 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
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# 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 json
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import re
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from six.moves.urllib import parse as urlparse
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import sahara.exceptions as ex
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class OozieClient(object):
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def __init__(self, url, oozie_server):
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self.job_url = url + "/v1/job/%s"
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self.jobs_url = url + "/v1/jobs"
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self.oozie_server = oozie_server
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self.port = urlparse.urlparse(url).port
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def _get_http_session(self, info=None):
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return self.oozie_server.remote().get_http_client(self.port, info=info)
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def add_job(self, job_config, job_execution):
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session = self._get_http_session(job_execution.extra.get('neutron'))
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resp = session.post(self.jobs_url, data=job_config, headers={
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"Content-Type": "application/xml;charset=UTF-8"
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})
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_check_status_code(resp, 201)
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return get_json(resp)['id']
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def run_job(self, job_execution, job_id):
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session = self._get_http_session(job_execution.extra.get('neutron'))
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resp = session.put(self.job_url % job_id + "?action=start")
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_check_status_code(resp, 200)
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def kill_job(self, job_execution):
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session = self._get_http_session(job_execution.extra.get('neutron'))
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resp = session.put(self.job_url % job_execution.oozie_job_id +
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"?action=kill")
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_check_status_code(resp, 200)
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def get_job_status(self, job_execution, job_id=None):
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if job_id is None:
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job_id = job_execution.oozie_job_id
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session = self._get_http_session(job_execution.extra.get('neutron'))
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resp = session.get(self.job_url % job_id + "?show=info")
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_check_status_code(resp, 200)
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return get_json(resp)
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def get_job_logs(self, job_execution):
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session = self._get_http_session(job_execution.extra.get('neutron'))
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resp = session.get(self.job_url % job_execution.oozie_job_id +
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"?show=log")
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_check_status_code(resp, 200)
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return resp.text
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def get_jobs(self, offset, size, **filter):
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url = self.jobs_url + "?offset=%s&len=%s" % (offset, size)
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if len(filter) > 0:
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f = ";".join([k + "=" + v for k, v in filter.items()])
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url += "&filter=" + urlparse.quote(f)
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session = self._get_http_session()
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resp = session.get(url)
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_check_status_code(resp, 200)
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return get_json(resp)
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def _check_status_code(resp, expected_code):
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if resp.status_code != expected_code:
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resp_text = resp.text
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# cleaning tomcat error message
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message = resp_text.split("<HR size=\"1\" noshade=\"noshade\">")[1]
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message = message.replace("</p><p>", "\n")
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message = re.sub('<[^<]+?>', ' ', message)
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raise OozieException(message)
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def get_json(response):
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"""Provides backward compatibility for old versions of requests library."""
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json_field_or_function = getattr(response, 'json', None)
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if callable(json_field_or_function):
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return response.json()
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else:
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return json.loads(response.content)
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class OozieException(ex.SaharaException):
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def __init__(self, message):
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self.message = message
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self.code = "OOZIE_EXCEPTION"
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