[teiid-issues] [JBoss JIRA] (TEIID-2732) Improve repeated string serialization performance
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https://issues.jboss.org/browse/TEIID-2732?page=com.atlassian.jira.plugin...
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Steven Hawkins resolved TEIID-2732.
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Resolution: Done
As far as I can tell the overhead of maintaining a map of string values is sufficiently
low compared to the time/space savings. Using our own map also results in better
performance than object serialization and allows us to combine values based upon equality,
not just object identity.
Improve repeated string serialization performance
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Key: TEIID-2732
URL: https://issues.jboss.org/browse/TEIID-2732
Project: Teiid
Issue Type: Quality Risk
Components: Query Engine
Affects Versions: 7.7
Reporter: Steven Hawkins
Assignee: Steven Hawkins
Fix For: 8.6
In Teiid 7.5 we switched away from object serialization to writing every value to the
serialization stream. This provides better performance for distinct/small values, but
adds a significant amount of overhead compared to just object serialization for large and
repeated values.
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