Comments (8)
Yes you start deploy cluster like 0.90.4.
Currently it's supported on top of HBase 0.94.8.
To build hindex, you can run "mvn clean package -DskipTests" as how we build hbase. By default it works with hadoop 1.x.
from hindex.
thx for u answer,
that's to say: i need to build hbase0.94.8 firstly,and then build hindex? or just build hindex and deploy it?
from hindex.
just build hindex and deploy it. Thanks
from hindex.
hi,
i'd like to know how index region's rowkey change when user region split,
i found the pic in pdf namely SecondaryIndex Design.pdf:
Note that index table's rowkeys are start with "001",but such region after split is start with "005",
is something wrong in that PDF?
if so, how to change index region's rowkey like "001_idxname_value_key" to "005_idxname_value_key"? ("005" means the index region's start key)
thank you!
from hindex.
After split HBase will kick start a compaction. As u know the split will create ref files and reading from those files use HalfStoreFileReader. The compaction will use these readers and do actual split of the file into 2.
In case of index region split we will use Special halfStoreFileReader. This reader when output the Cells during compaction will do this rewrite of 001->005
from hindex.
that's to say,when compacting Cells ,Special halfStoreFileReader will put a new rowkey ("005_idxname_value_key" ) instead of old one for a particular row?
from hindex.
Yes. The special reader will output cell with replaced rk. 001 part will be replaced to 005 (as that is the start key now)
from hindex.
Hi ,
i'd like to know is it possible to change HRegion's split threshold dynamically?
i.e I use some algorithm like genetic algorithm to modify split threshold without manual intervention,
if so, what should I focus on?
thanks ,
xuxc
12.16
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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
- 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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