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From "Robert Reid (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-25136) unable to use HDFS checkpoint directories after driver restart
Date Fri, 01 Feb 2019 00:33:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-25136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16757828#comment-16757828
] 

Robert Reid commented on SPARK-25136:
-------------------------------------

[~gsomogyi] I haven't had a chance to retry it. Our build system was changed since I last
was working on this. So I'll need to rework some things to get that environment runnable.

> unable to use HDFS checkpoint directories after driver restart
> --------------------------------------------------------------
>
>                 Key: SPARK-25136
>                 URL: https://issues.apache.org/jira/browse/SPARK-25136
>             Project: Spark
>          Issue Type: Bug
>          Components: Structured Streaming
>    Affects Versions: 2.3.0
>            Reporter: Robert Reid
>            Priority: Major
>
> I have been attempting to work around the issue first discussed at the end of SPARK-20894.
The problem that we are encountering is the inability of the Spark Driver to process additional
data after restart. Upon restart it reprocesses batches from the initial run. But when processing
the first batch it crashes because of missing checkpoint files.
> We have a structured streaming job running on a Spark Standalone cluster. We restart
the Spark Driver to renew the Kerberos token in use to access HDFS. Excerpts of log lines
from a run are included below. In short, when the new driver starts it reports that it is
going to use a new checkpoint directory in HDFS. Workers report that they have loaded a StateStoreProviders
that matches the directory. But then the worker reports that it cannot read the delta files.
This causes the driver to crash.
> The HDFS directories are present but empty. Further, the directory permissions for the
original and new checkpoint directories are the same. The worker never crashes.
> As mentioned in SPARK-20894, deleting the _spark_metadata directory makes subsequent
restarts succeed.
> Here is a timeline of log records from a recent run.
> A new run began at 00:29:21. These entries from a worker log look good.
> {{18/08/16 00:30:21 INFO HDFSBackedStateStoreProvider: Retrieved version 0 of HDFSStateStoreProvider[id
= (op=0,part=0),dir = hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/a82c35a9-9e98-43f4-9f72-c6e72e4d223e/state/0/0]
for update}}
> {{18/08/16 00:30:23 INFO HDFSBackedStateStoreProvider: Committed version 1 for HDFSStateStore[id=(op=0,part=0),dir=hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/a82c35a9-9e98-43f4-9f72-c6e72e4d223e/state/0/0]
to file hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/a82c35a9-9e98-43f4-9f72-c6e72e4d223e/state/0/0/1.delta}}
> As the shutdown is occurring the worker reports
> {{18/08/16 00:39:11 INFO HDFSBackedStateStoreProvider: Aborted version 29 for HDFSStateStore[id=(op=0,part=0),dir=hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/a82c35a9-9e98-43f4-9f72-c6e72e4d223e/state/0/0]}}
> The restart began at 00:39:38.
> Driver log entries
> {{18/08/16 00:39:51 INFO MicroBatchExecution: Starting [id = e188d15f-e26a-48fd-9ce6-8c57ce53c2c1,
runId = b7ee0163-47db-4392-ab66-94d36ce63074]. Use hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/ead17db8-3660-4bb9-b519-bd7a3599c040
to store the query checkpoint.}}
> {{18/08/16 00:40:26 WARN TaskSetManager: Lost task 0.0 in stage 1.0 (TID 10, 10.251.104.164,
executor 3): java.lang.IllegalStateException: Error reading delta file hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/ead17db8-3660-4bb9-b519-bd7a3599c040/state/0/0/1.delta
of HDFSStateStoreProvider[id = (op=0,part=0),dir = hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/ead17db8-3660-4bb9-b519-bd7a3599c040/state/0/0]:
hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/ead17db8-3660-4bb9-b519-bd7a3599c040/state/0/0/1.delta
does not exist}}
> {{Caused by: org.apache.hadoop.ipc.RemoteException(java.io.FileNotFoundException): File
does not exist: /projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/ead17db8-3660-4bb9-b519-bd7a3599c040/state/0/0/1.delta}}
>  
> Worker log entries
> {{18/08/16 00:40:26 INFO StateStore: Reported that the loaded instance StateStoreProviderId(StateStoreId(hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/ead17db8-3660-4bb9-b519-bd7a3599c040/state,0,0,default),b7ee0163-47db-4392-ab66-94d36ce63074)
is active}}
> {{java.lang.IllegalStateException: Error reading delta file hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/ead17db8-3660-4bb9-b519-bd7a3599c040/state/0/0/1.delta
of HDFSStateStoreProvider[id = (op=0,part=0),dir = hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/ead17db8-3660-4bb9-b519-bd7a3599c040/state/0/0]:
hdfs://securehdfs/projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/ead17db8-3660-4bb9-b519-bd7a3599c040/state/0/0/1.delta
does not exist}}
> {{Caused by: java.io.FileNotFoundException: File does not exist: /projects/flowsnake/search_relevance_proto/search_relevance_proto/63cd3c36-eff9-4900-a010-8eb204429034/checkpoints/ead17db8-3660-4bb9-b519-bd7a3599c040/state/0/0/1.delta}}



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