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https://issues.apache.org/jira/browse/HBASE-3453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12984574#action_12984574
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ncanis commented on HBASE-3453:
-------------------------------
to ryan rawson
you're right.
most
of the scalable designs don't use offset,limit
gmail of google also doesn't have paging, just using prev/next
If we want to implement like gmail list, we must know start row key.(clients
know last rowkey. :) )
so, I'm working to solve paging problem.
-----------------
for example
1. search(byte[] startRow, String col, byte[] value) : clients know last
startRow value in their list.
2. find out column position in col index table.
3. I set start rowkey = Bytes.add(si.getValue(),startRow);
4. add PageFilter
5. run getIndexedScanner
6. done.
Thanks a lot for your help.
I deprecated RowPaginationFilter
> How about RowPaginationFilter
> -----------------------------
>
> Key: HBASE-3453
> URL: https://issues.apache.org/jira/browse/HBASE-3453
> Project: HBase
> Issue Type: Wish
> Components: client
> Affects Versions: 0.90.1
> Environment: windows 7
> Reporter: ncanis
> Attachments: RowPaginationFilter.java
>
>
> I know hbase has already PageFilter.
> But, sometime we need to get row data from specified position.
> * only for newbie:
> If you want to write custom Filter, you also add filter class to an hbase
> server classpath.
> {code:title=RowPaginationFilter|borderStyle=solid}
> /**
> * Constructor that takes a maximum page size.
> *
> * get row from offset to offset+limit ( offset<= row<=offset+limit )
> * @param offset start position
> * @param limit count from offset position
> */
> public RowPaginationFilter(final int offset, final int limit) {
> this.offset = offset;
> this.limit = limit;
> }
> //true to exclude row, false to include row.
> @Override
> public boolean filterRow() {
>
> boolean isExclude = this.rowsAccepted < this.offset ||
> this.rowsAccepted>=this.limit+this.offset;
> rowsAccepted++;
> return isExclude;
> }
> {code}
> -----------------
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