Speed up Routing Nodes Priority Comparator#78609
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original-brownbear merged 2 commits intoelastic:masterfrom Oct 4, 2021
original-brownbear:speed-up-priority-sort
Merged
Speed up Routing Nodes Priority Comparator#78609original-brownbear merged 2 commits intoelastic:masterfrom original-brownbear:speed-up-priority-sort
original-brownbear merged 2 commits intoelastic:masterfrom
original-brownbear:speed-up-priority-sort
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This one shows up very hot if sorting a long list of shards because of the cost of looking up the settings over and over. Lazy+best-effort caching the two settings that get looked up significantly speeds up the routing sorting.
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Pinging @elastic/es-distributed (Team:Distributed) |
| final String o1Index = o1.getIndexName(); | ||
| final String o2Index = o2.getIndexName(); | ||
| final Index o1Index = o1.index(); | ||
| final Index o2Index = o2.index(); |
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Better compare the Index here than just their names. If we have instance equality it's the same performance as comparing names. If we have different indices, the UUID strings will compare quicker than index names because there's no common prefixes.
DaveCTurner
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Oct 4, 2021
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DaveCTurner
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Could we just make these final fields that get read from the settings in IndexMetadata$Builder#build()?
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🤦♂️ yea that's less stupid :) thanks! |
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Thanks David! |
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This one shows up very hot if sorting a long list of shards because of the
cost of looking up the settings over and over. Lazy+best-effort caching
the two settings that get looked up significantly speeds up the routing sorting.