Uploaded image for project: 'Flink'
  1. Flink
  2. FLINK-11665

Flink fails to remove JobGraph from ZK even though it reports it did

    XMLWordPrintableJSON

Details

    Description

      We recently have seen the following issue with Flink 1.5.5:

      Given Flink Job ID 1d24cad26843dcebdfca236d5e3ad82a: 

      1- A job is activated successfully and the job graph added to ZK:

      Added SubmittedJobGraph(1d24cad26843dcebdfca236d5e3ad82a, null) to ZooKeeper.
      

      2- Job is deactivated, Flink reports that the job graph has been successfully removed from ZK and the blob is deleted from the blob server (in this case S3):

      Removed job graph 1d24cad26843dcebdfca236d5e3ad82a from ZooKeeper.
      

      3- JM is later restarted, Flink for some reason attempts to recover the job that it reported earlier it has removed from ZK but since the blob has already been deleted the JM goes into a crash loop. The only way to recover it manually is to remove the job graph entry from ZK:

      Recovered SubmittedJobGraph(1d24cad26843dcebdfca236d5e3ad82a, null).	
      

      and

      org.apache.flink.fs.s3presto.shaded.com.amazonaws.services.s3.model.AmazonS3Exception: The specified key does not exist. (Service: Amazon S3; Status Code: 404; Error Code: NoSuchKey; Request ID: 1BCDFD83FC4546A2), S3 Extended Request ID: OzZtMbihzCm1LKy99s2+rgUMxyll/xYmL6ouMvU2eo30wuDbUmj/DAWoTCs9pNNCLft0FWqbhTo= (Path: s3://blam-state-staging/flink/default/blob/job_1d24cad26843dcebdfca236d5e3ad82a/blob_p-c51b25cc0b20351f6e32a628bb6e674ee48a273e-ccfa96b0fd795502897c73714185dde3)
      

      My question is under what circumstances would this happen? this seems to happen very infrequently but since the consequence is severe (JM crash loop) we'd like to understand how it would happen.

      This all seems a little similar to https://issues.apache.org/jira/browse/FLINK-9575 but that issue is reported fixed in Flink 1.5.2 and we are already on Flink 1.5.5

      Attachments

        1. FLINK-11665.csv
          16 kB
          Bashar Abdul Jawad

        Issue Links

          Activity

            People

              trohrmann Till Rohrmann
              basharaj Bashar Abdul Jawad
              Votes:
              0 Vote for this issue
              Watchers:
              9 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Time Tracking

                  Estimated:
                  Original Estimate - Not Specified
                  Not Specified
                  Remaining:
                  Remaining Estimate - 0h
                  0h
                  Logged:
                  Time Spent - 20m
                  20m