Question

在尝试通过Python API构建H2O随机森林时，我遇到了一个片状错误。（我已经保存了空的.err文件和.out文件，以防有人想查看它。）

 "java.lang.AssertionError: Can't unlock: Not locked!"

在我试过的三次中有两次。一次失败显示进展率高达86％，另一次失败率高达90％。在第三次尝试中，我一路走来。我在第一次失败后重新启动了H2O服务器。

在x86_64上运行x86_64 x86_64 GNU / Linux，Linux 4.4.0-101-generic（Ubuntu），H2O 3.18.0.4，Python 2.7.12

对于大约86个类和137个数字输入特征的多名义分类器，大约有33K训练集示例。以前，我们没有问题（除了一些超时问题）系统使用类似的数据使用更旧版本的H2O。

这是运行我的程序到stdout的输出。

Attempting to start a local H2O server...
  Java Version: java version "1.8.0_144"; Java(TM) SE Runtime Environment (build 1.8.0_144-b01); Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
  Starting server from /home/ubuntu/django-env/lib/python2.7/site-packages/h2o/backend/bin/h2o.jar
  Ice root: /tmp/tmpViqbs4
  JVM stdout: /tmp/tmpViqbs4/h2o_ubuntu_started_from_python.out
  JVM stderr: /tmp/tmpViqbs4/h2o_ubuntu_started_from_python.err
  Server is running at http://127.0.0.1:54321
Connecting to H2O server at http://127.0.0.1:54321... successful.
--------------------------  ----------------------------------------
H2O cluster uptime:         08 secs
H2O cluster timezone:       Etc/UTC
H2O data parsing timezone:  UTC
H2O cluster version:        3.18.0.4
H2O cluster version age:    24 days
H2O cluster name:           H2O_from_python_ubuntu_x4p9wv
H2O cluster total nodes:    1
H2O cluster free memory:    6.545 Gb
H2O cluster total cores:    8
H2O cluster allowed cores:  8
H2O cluster status:         accepting new members, healthy
H2O connection url:         http://127.0.0.1:54321
H2O connection proxy:
H2O internal security:      False
H2O API Extensions:         XGBoost, Algos, AutoML, Core V3, Core V4
Python version:             2.7.12 final
--------------------------  ----------------------------------------

[省略的东西]

Parse progress: |█████████████████████████████████████████████████████████████████████████████| 100%
Running trainh2o()..
drf Model Build progress: |█████████████████████████████████████████████████████████▉ (failed)|  86%
Traceback (most recent call last):
  File "/home/ubuntu/XXX/webapp/XXX/classify_unified/buildpc.py", line 130, in <module>
    print("\nTrain Error: {}".format(pc.train()))
  File "/home/ubuntu/XXX/webapp/XXX/classify_unified/ProvisionClassifier.py", line 2130, in train
    self._trainh2o()
  File "/home/ubuntu/XXX/webapp/XXX/classify_unified/ProvisionClassifier.py", line 2090, in _trainh2o
    training_frame=self._combo_h2odf)
  File "/home/ubuntu/django-env/local/lib/python2.7/site-packages/h2o/estimators/estimator_base.py", line 232, in train
    model.poll(verbose_model_scoring_history=verbose)
  File "/home/ubuntu/django-env/local/lib/python2.7/site-packages/h2o/job.py", line 77, in poll
    "\n{}".format(self.job_key, self.exception, self.job["stacktrace"]))
EnvironmentError: Job with key $03017f00000132d4ffffffff$_8f9d9edcff82420eefea1d6cff0f4396 failed with an exception: java.lang.AssertionError: Can't unlock: Not locked!
stacktrace: 
java.lang.AssertionError: Can't unlock: Not locked!
    at water.Lockable$Unlock.atomic(Lockable.java:197)
    at water.Lockable$Unlock.atomic(Lockable.java:187)
    at water.TAtomic.atomic(TAtomic.java:17)
    at water.Atomic.compute2(Atomic.java:56)
    at water.Atomic.fork(Atomic.java:39)
    at water.Atomic.invoke(Atomic.java:31)
    at water.Lockable.unlock(Lockable.java:181)
    at water.Lockable.unlock(Lockable.java:176)
    at hex.tree.SharedTree$Driver.computeImpl(SharedTree.java:358)
    at hex.ModelBuilder$Driver.compute2(ModelBuilder.java:206)
    at water.H2O$H2OCountedCompleter.compute(H2O.java:1263)
    at jsr166y.CountedCompleter.exec(CountedCompleter.java:468)
    at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263)
    at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974)
    at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477)
    at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)

    H2O session _sid_9f4c closed.

Flaky Assert“java.lang.AssertionError：无法解锁：未锁定！”

0 个答案: