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  1. Lucene - Core
  2. LUCENE-6779

Reduce memory allocated by CompressingStoredFieldsWriter to write large strings

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 5.4, 6.0
    • Component/s: core/codecs
    • Labels:
      None
    • Lucene Fields:
      New

      Description

      In SOLR-7927, I am trying to reduce the memory required to index very large documents (between 10 to 100MB) and one of the places which allocate a lot of heap is the UTF8 encoding in CompressingStoredFieldsWriter. The same problem existed in JavaBinCodec and we reduced its memory allocation by falling back to a double pass approach in SOLR-7971 when the utf8 size of the string is greater than 64KB.

      I propose to make the same changes to CompressingStoredFieldsWriter as we made to JavaBinCodec in SOLR-7971.

        Attachments

        1. LUCENE-6779.patch
          13 kB
          Shalin Shekhar Mangar
        2. LUCENE-6779.patch
          9 kB
          Shalin Shekhar Mangar
        3. LUCENE-6779.patch
          8 kB
          Shalin Shekhar Mangar
        4. LUCENE-6779_alt.patch
          6 kB
          Robert Muir
        5. LUCENE-6779.patch
          8 kB
          Shalin Shekhar Mangar

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            • Assignee:
              shalin Shalin Shekhar Mangar
              Reporter:
              shalin Shalin Shekhar Mangar

              Dates

              • Created:
                Updated:
                Resolved:

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