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  1. WiredTiger
  2. WT-3244

metadata operations failing in in-memory configurations

    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • WT2.9.2, 3.2.13, 3.4.4, 3.5.6
    • Affects Version/s: None
    • Component/s: None
    • None
    • Storage 2017-04-17

      Metadata unroll operations can fail because of cache pressure in in-memory configurations.

      Here's the failure:

      [1490812549:504397][5153:0x7f81b57fa700]  t  WT_SESSION.alter: metadata 
      unroll update file:wt to access_pattern_hint=none allocation_size=512
      app_metadata= block_allocation=best block_compressor=
      cache_resident=false checkpoint= checkpoint_lsn= checksum="uncompressed"
      collator= columns= dictionary=0 encryption=(keyid= name=) format=btree
      huffman_key= huffman_value=english id=1
      ignore_in_memory_cache_size=false internal_item_max=0
      internal_key_max=659 internal_key_truncate=true internal_page_max=32768
      key_format=r key_gap=11 leaf_item_max=0 leaf_key_max=818
      leaf_page_max=32768 leaf_value_max=0 log=(enabled=true)
      memory_page_max=5MB os_cache_dirty_max=0 os_cache_max=0
      prefix_compression=false prefix_compression_min=4
      split_deepen_min_child=0 split_deepen_per_child=0 split_pct=54
      value_format=u version=(major=1 minor=1): WT_CACHE_FULL: operation would
      overflow cache
      

            Assignee:
            keith.bostic@mongodb.com Keith Bostic (Inactive)
            Reporter:
            keith.bostic@mongodb.com Keith Bostic (Inactive)
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              Created:
              Updated:
              Resolved: