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https://jira.jboss.org/jira/browse/DNA-466?page=com.atlassian.jira.plugin...
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Randall Hauch commented on DNA-466:
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Here are some stats for walking a graph of 42 nodes in a JCR repository, BEFORE the path
cache was added. The first line has the stats for a cold SessionCache, while the other
lines are for the SessionCache warmed from the prior runs.
42 samples: min=00:00:00.000,822; avg=00:00:00.004,539; median=00:00:00.004,77;
stddev=2290766.3804887054; max=00:00:00.011,695
42 samples: min=00:00:00.000,145; avg=00:00:00.002,363; median=00:00:00.002,59;
stddev=1504321.345995642; max=00:00:00.010,357
42 samples: min=00:00:00.000,211; avg=00:00:00.002,437; median=00:00:00.002,599;
stddev=1511336.257570337; max=00:00:00.010,526
Here are the same stats for walking a graph of 42 nodes in a JCR repository, AFTER the
path cache was added.
42 samples: min=00:00:00.000,587; avg=00:00:00.001,789; median=00:00:00.001,624;
stddev=1223475.6189381357; max=00:00:00.007,328
42 samples: min=00:00:00.000,078; avg=00:00:00.000,292; median=00:00:00.000,082;
stddev=872058.0812378004; max=00:00:00.005,323
42 samples: min=00:00:00.000,077; avg=00:00:00.000,081; median=00:00:00.000,082;
stddev=2527.9615442409304; max=00:00:00.000,095
Notice the significantly improved performance.
JCR requires connectors to expose UUID as identifier property
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Key: DNA-466
URL:
https://jira.jboss.org/jira/browse/DNA-466
Project: DNA
Issue Type: Bug
Components: JCR
Affects Versions: 0.5
Reporter: Randall Hauch
Assignee: Randall Hauch
Priority: Blocker
Fix For: 0.6
The JCR implementation currently expects connectors to return a UUID as the identifier
property. This is obviously incorrect, as it goes against several of the connectors
we've already implemented. In particular, the SessionCache is expecting to find the
UUID, and submits requests to the source with only the UUID (not the path).
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