[ https://issues.apache.org/jira/browse/HBASE-15325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15195134#comment-15195134 ]
Phil Yang commented on HBASE-15325: ----------------------------------- If you don't setBatch or setAllowPartial(true), you will not miss anything. If you set, you may have read some cells and you will miss all the rest cells in this row. > ResultScanner allowing partial result will miss the rest of the row if the > region is moved between two rpc requests > ------------------------------------------------------------------------------------------------------------------- > > Key: HBASE-15325 > URL: https://issues.apache.org/jira/browse/HBASE-15325 > Project: HBase > Issue Type: Bug > Components: dataloss, Scanners > Affects Versions: 1.2.0, 1.1.3 > Reporter: Phil Yang > Assignee: Phil Yang > Priority: Critical > Fix For: 2.0.0, 1.3.0, 1.2.1, 1.1.4, 1.4.0 > > Attachments: 15325-test.txt, HBASE-15325-v1.txt, > HBASE-15325-v10.patch, HBASE-15325-v2.txt, HBASE-15325-v3.txt, > HBASE-15325-v5.txt, HBASE-15325-v6.1.txt, HBASE-15325-v6.2.txt, > HBASE-15325-v6.3.txt, HBASE-15325-v6.4.txt, HBASE-15325-v6.5.txt, > HBASE-15325-v6.txt, HBASE-15325-v7.patch, HBASE-15325-v8.patch, > HBASE-15325-v9.patch > > > HBASE-11544 allow scan rpc return partial of a row to reduce memory usage for > one rpc request. And client can setAllowPartial or setBatch to get several > cells in a row instead of the whole row. > However, the status of the scanner is saved on server and we need this to get > the next part if there is a partial result before. If we move the region to > another RS, client will get a NotServingRegionException and open a new > scanner to the new RS which will be regarded as a new scan from the end of > this row. So the rest cells of the row of last result will be missing. -- This message was sent by Atlassian JIRA (v6.3.4#6332)