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  1. HBase
  2. HBASE-2362

Improve gets/scans when all columns of a key is requested.

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Not A Problem
    • None
    • None
    • regionserver
    • None

    Description

      Right now, we get one KeyValue at a time and run it through the matcher even if the query is to fetch the entire row (or even an entire column family for a key). This causes the blocks to be fetched serially from HDFS. We can optimize this by looking at the block map, and fetching all the blocks spanned by the key in one request to HDFS.

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          is part of

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-2498 Read multiple HFile blocks from HDFS in a single call when possible

          • Major - Major loss of function.
          • Closed

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              Unassigned Unassigned
              karthik.ranga Karthik Ranganathan
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                Created:
                Updated:
                Resolved: