Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: 0.19.0, 0.20.0
    • Fix Version/s: 0.18.3, 0.19.1
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
      Hide
      fix memory leak of user/group information in fuse-dfs

      Show
      fix memory leak of user/group information in fuse-dfs

      Description

      I am running a process that needs to crawl a tree structure containing ~10K images, copy the images to the local disk, process these images, and copy them back to HDFS.

      My problem is the following : after about 10h of processing, the processes crash, complaining about a std::bad_alloc exception (I use hadoop pipes to run existing software). When running fuse_dfs in debug mode, I get an outOfMemoryError, telling that there is no more room in the heap.

      While the process is running, using top or ps, I notice that fuse is using up an increasing amount of memory, until some limit is reached. At that point , the memory used is oscillating. I suppose that this is due to the use of the virtual memory.

      This leads me to the conclusion that there is some memory leak in fuse_dfs, since the only other programs running are Hadoop and the existing software, both thoroughly tested in the past.

      My problem is that my knowledge concerning memory leak tracking is rather limited, so I will need some instructions to get more insight concerning this issue.

      Thank you

        Attachments

        1. HADOOP-4635.txt.0.18
          3 kB
          Pete Wyckoff
        2. HADOOP-4635.txt.0.19
          2 kB
          Pete Wyckoff
        3. patch-hadoop4635.test_18
          32 kB
          Pete Wyckoff
        4. patch-hadoop4635.test_19
          61 kB
          Pete Wyckoff
        5. TEST-TestFuseDFS.txt-4635
          36 kB
          Pete Wyckoff

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              • Assignee:
                wyckoff Pete Wyckoff
                Reporter:
                mofleury Marc-Olivier Fleury
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                Dates

                • Created:
                  Updated:
                  Resolved: