[
https://issues.apache.org/jira/browse/OAK-6867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Alex Deparvu updated OAK-6867:
------------------------------
Description:
For the UUID lookup query I enabled the (recently added) query hints support
where you can specify the index you want to be used and I got an interesting
speedup in the benchmarks:
{noformat}
Hint disabled, lookup by query
# UUIDLookupTest C min 10% 50% 90% max
N
No of indexes (60) 60, Lookup by (lookupByQuery)[query]
Oak-Segment-Tar 1 5 5 6 7 27
9837
Hint enabled, lookup by query
# UUIDLookupTest C min 10% 50% 90% max
N
No of indexes (60) 60, Lookup by (lookupByQuery)[query]
Oak-Segment-Tar 1 5 5 6 7 13
10128
Hint enabled, lookup by getNode
# UUIDLookupTest C min 10% 50% 90% max
N
No of indexes (60) 60, Lookup by (lookupByQuery)[Session#getNodeByIdentifier]
Oak-Segment-Tar 1 5 6 6 7 13
9447
Hint disabled, lookup by getNode
# UUIDLookupTest C min 10% 50% 90% max
N
No of indexes (60) 60, Lookup by (lookupByQuery)[Session#getNodeByIdentifier]
Oak-Segment-Tar 1 3 3 3 4 8
17504
{noformat}
It seems the cost shortcut is reducing the overall time, but cannot say for
sure where this change comes from.
The only change I did was to add {{option(index name uuid)}} to this query [0]
[~tmueller], [~chetanm] what do you think?
[0]
https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/identifier/IdentifierManager.java#L356
was:
For the UUID lookup query I enabled the (recently added) query hints support
where you can specify the index you want to be used and I got an interesting
speedup in the benchmarks:
{noformat}
Hint disabled, lookup by query
# UUIDLookupTest C min 10% 50% 90% max
N
No of indexes (60) 60, Lookup by (lookupByQuery)[query]
Oak-Segment-Tar 1 5 5 6 7 27
9837
Hint enabled, lookup by query
# UUIDLookupTest C min 10% 50% 90% max
N
No of indexes (60) 60, Lookup by (lookupByQuery)[query]
Oak-Segment-Tar 1 5 5 6 7 13
10128
Hint enabled, lookup by getNode
# # UUIDLookupTest C min 10% 50% 90% max
N
No of indexes (60) 60, Lookup by (lookupByQuery)[Session#getNodeByIdentifier]
Oak-Segment-Tar 1 5 6 6 7 13
9447
Hint disabled, lookup by getNode
# UUIDLookupTest C min 10% 50% 90% max
N
No of indexes (60) 60, Lookup by (lookupByQuery)[Session#getNodeByIdentifier]
Oak-Segment-Tar 1 3 3 3 4 8
17504
{noformat}
It seems the cost shortcut is reducing the overall time, but cannot say for
sure where this change comes from.
The only change I did was to add {{option(index name uuid)}} to this query [0]
[~tmueller], [~chetanm] what do you think?
[0]
https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/identifier/IdentifierManager.java#L356
> Enable index hints on UUID lookup query
> ---------------------------------------
>
> Key: OAK-6867
> URL: https://issues.apache.org/jira/browse/OAK-6867
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: query
> Reporter: Alex Deparvu
>
> For the UUID lookup query I enabled the (recently added) query hints support
> where you can specify the index you want to be used and I got an interesting
> speedup in the benchmarks:
> {noformat}
> Hint disabled, lookup by query
> # UUIDLookupTest C min 10% 50% 90% max
> N
> No of indexes (60) 60, Lookup by (lookupByQuery)[query]
> Oak-Segment-Tar 1 5 5 6 7 27
> 9837
> Hint enabled, lookup by query
> # UUIDLookupTest C min 10% 50% 90% max
> N
> No of indexes (60) 60, Lookup by (lookupByQuery)[query]
> Oak-Segment-Tar 1 5 5 6 7 13
> 10128
> Hint enabled, lookup by getNode
> # UUIDLookupTest C min 10% 50% 90% max
> N
> No of indexes (60) 60, Lookup by (lookupByQuery)[Session#getNodeByIdentifier]
> Oak-Segment-Tar 1 5 6 6 7 13
> 9447
> Hint disabled, lookup by getNode
> # UUIDLookupTest C min 10% 50% 90% max
> N
> No of indexes (60) 60, Lookup by (lookupByQuery)[Session#getNodeByIdentifier]
> Oak-Segment-Tar 1 3 3 3 4 8
> 17504
> {noformat}
> It seems the cost shortcut is reducing the overall time, but cannot say for
> sure where this change comes from.
> The only change I did was to add {{option(index name uuid)}} to this query [0]
> [~tmueller], [~chetanm] what do you think?
> [0]
> https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/identifier/IdentifierManager.java#L356
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
