Comments (6)
You mean even if index is there, user dont want to use it and go with full table scan?
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Yes Anoop, After evaluating filters if the index scan become range then we can give option to skip or continue using the hints. Otherwise some time we may end up scanning two tables.
from hindex.
If it is a range scan, the user will know it at scan client itself. (The Filter will be range based) There is already provision for user to pass attribute in Scan to Hint not to use Index at at all. Forgot the class name. So IMO this is already possible.
from hindex.
Yes Anoop we have NoIndexExpression. But some cases even if the filters are range then internally after evaluation they can become equal queries. For example if a scan filter are like this column>=100 and column<=100 then after evaluating it will become equal query with filter column=100 so then we need not skip.
Yes it's of lesser priority..May be we can close also if not such important.
from hindex.
Yes that Filter on creation at client side itself, use can know it is equal or range condition na? Any way IMO NoIndexExpression is fair enough way.
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closing it Anoop.
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Related Issues (20)
- hindex write issues HOT 7
- Support secure access to the index tables HOT 2
- migrate hindex to hbase 0.96 or higher HOT 5
- deadlock in put operation HOT 3
- issues in put operation HOT 10
- how to use the index? HOT 8
- Error when compile with maven.
- How to use hindex for scanning data? HOT 20
- Steps to implement hindex to my hbase cluster HOT 6
- is there any new release based on hbase0.98.1+? HOT 3
- ERRORs in building with CDH5.1 HOT 10
- Indexing arbitrary column qualifier HOT 4
- Pending items in Arbitrary index feature
- Unify index details validation in preCreateTable and preModifyTable to allow proper indexes
- To determine the split threshold
- Perfomance about hindex in range search
- No compile document? HOT 3
- does hindex only support hbase 0.94.8?
- Your project Huawei-Hadoop hindex is using buggy third-party libraries [WARNING]
- 请求项目如何启动?
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