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Read query semantics #30

Closed
1 of 4 tasks
at15 opened this issue May 5, 2017 · 2 comments
Closed
1 of 4 tasks

Read query semantics #30

at15 opened this issue May 5, 2017 · 2 comments
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api feature/major pre-benchhub
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Query language
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0.1.0

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at15 commented May 5, 2017 •
edited

Now need to have the syntax and semantics for read #9 , mainly three problems

Other problems

  • human friendly syntax, like last 5 min instead of epoch

Ref
@at15 at15 added this to the 0.1.0 milestone May 5, 2017
@at15 at15 self-assigned this May 5, 2017
@at15 at15 added this to DOING in Query language May 5, 2017
at15 added a commit that referenced this issue May 5, 2017
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[doc][survey][druid] Query semantics #30
664d932 
- use json to represent AST for `and`, `or`, similar to Heroic, but
much clearer
- moving aggreation is supported by `granularity`, like use `sum`
aggregation with `granularity` of `1day` is moving average of 1 day
- it allows operation between cloumns, which is more like compare
between (across) series, but there is not need to return two series data when
you have series1 == series2
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at15 commented May 5, 2017

Druid's syntax is pretty clear, KairosDB only allow AND, IN for tags, while it might be useful to have OR and regexp for tags

at15 added a commit that referenced this issue May 6, 2017
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[query][read] Add spec for filter like Druid #30
1178aae 
- filter is like AST
- aggregator is applied within a series, not across series
at15 added a commit that referenced this issue May 6, 2017
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[query][read] Custom JSON encode decode #30
b5beb9a 
- need to use alias when decode, same as readRequest in #29
- [ ] FIXME: can't omit empty custom type, guess golang can only ignore
primitive types
- add `.vscode` to gitignore
- add Kafka to survey, it uses mmap and sendfile
@at15 at15 added api and removed working labels May 31, 2017
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at15 commented Feb 15, 2018

Close in favor of #60

@at15 at15 closed this as completed Feb 15, 2018
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