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  1. WiredTiger
  2. WT-3613

test/format cache full with LSM

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.6.0-rc0, WT3.0.0
    • Component/s: None
    • Labels:
      None
    • Sprint:
      Storage 2017-10-23

      Description

      There have been a number of test/format failures timing out with cache stuck full in the last few days. The failures generally have a set of shared characteristics:

      • LSM
      • Moderately sized cache (30MB->60MB)
      • No transaction IDs are pinned

      An example config from a failing run:

      ############################################
      #  RUN PARAMETERS
      ############################################
      abort=0
      alter=0
      auto_throttle=1
      backups=0
      bitcnt=4
      bloom=1
      bloom_bit_count=40
      bloom_hash_count=25
      bloom_oldest=0
      cache=120
      checkpoints=1
      checksum=uncompressed
      chunk_size=4
      compaction=0
      compression=lz4
      data_extend=0
      data_source=lsm
      delete_pct=5
      dictionary=0
      direct_io=0
      encryption=none
      evict_max=2
      file_type=row-store
      firstfit=1
      huffman_key=0
      huffman_value=0
      independent_thread_rng=1
      in_memory=0
      insert_pct=69
      internal_key_truncation=1
      internal_page_max=9
      isolation=random
      key_gap=5
      key_max=256
      key_min=256
      leaf_page_max=9
      leak_memory=0
      logging=0
      logging_archive=1
      logging_compression=none
      logging_prealloc=1
      long_running_txn=0
      lsm_worker_threads=4
      merge_max=8
      mmap=1
      modify_pct=0
      ops=100000
      prefix_compression=1
      prefix_compression_min=3
      quiet=1
      read_pct=7
      rebalance=1
      repeat_data_pct=42
      reverse=0
      rows=100000
      runs=1
      salvage=1
      split_pct=73
      statistics=0
      statistics_server=0
      threads=19
      timer=360
      transaction_timestamps=0
      transaction-frequency=52
      value_max=2671
      value_min=256
      verify=1
      wiredtiger_config=
      write_pct=19
      ############################################
      

      A link to the original failure:
      http://build.wiredtiger.com:8080/job/wiredtiger-test-format-stress/56914

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              Assignee:
              michael.cahill Michael Cahill
              Reporter:
              alexander.gorrod Alexander Gorrod
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                Dates

                Created:
                Updated:
                Resolved: