[HBASE-364] [hbase] Make mapfile index interval configurable - ASF JIRA

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Details

Type: Bug
Status: Closed
Priority: Minor
Resolution: Fixed
Affects Version/s: None
Fix Version/s: None
Component/s: None
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Description

Default mapfile index interval is every 128 entries. Basic tests show PerformanceEvaluation mapfile test random reading 100k records in 60plus seconds. If index interval is set to 1 so we don't have to next around looking for our record, then 100k random reads take 7 seconds. This is using local filesystem. If I set it to 16, then takes 12 seconds.

Testing doing PerformanceEvaluation random reads against hbase, with interval set to 16, we run 50% faster (hdfs is in the picture).

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2485.patch
24/Dec/07 17:16
15 kB
Michael Stack
index.patch
22/Dec/07 06:10
15 kB
Michael Stack

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Assignee:: Unassigned

Reporter:: Michael Stack

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Dates

Created:: 22/Dec/07 04:56

Updated:: 22/Aug/08 21:35

Resolved:: 27/Dec/07 22:27