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https://issues.apache.org/jira/browse/HBASE-16931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15600900#comment-15600900
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binlijin commented on HBASE-16931:
----------------------------------
When i check the hfile's data there is “K:
067:532053748281/a:priceTrend/1476280811000/Put/vlen=4/seqid=11993975 V: 39.0”
in a hfile, and “K:
067:532053748281/a:priceTrend/1476280811000/Put/vlen=0/seqid=12076597 V:“ in
another hfile, so actually there is no cell "Key
067:532053748281/a:priceTrend/1476280811000/Put/vlen=0/seqid=0" in hfile.
> Cleaned seqid in compaction should set back when write finish.
> --------------------------------------------------------------
>
> Key: HBASE-16931
> URL: https://issues.apache.org/jira/browse/HBASE-16931
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 2.0.0
> Reporter: binlijin
> Assignee: binlijin
>
> Compactor#performCompaction
> do {
> hasMore = scanner.next(cells, scannerContext);
> // output to writer:
> for (Cell c : cells) {
> if (cleanSeqId && c.getSequenceId() <= smallestReadPoint) {
> CellUtil.setSequenceId(c, 0);
> }
> writer.append(c);
> }
> cells.clear();
> } while (hasMore);
> scanner.next will choose at most "hbase.hstore.compaction.kv.max" kvs, the
> last cell still reference by StoreScanner.prevCell, so if cleanSeqId is
> called when the scanner.next call StoreScanner.checkScanOrder may throw
> exception and cause regionserver down.
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