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https://issues.apache.org/jira/browse/HBASE-15325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15190916#comment-15190916
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Phil Yang commented on HBASE-15325:
-----------------------------------
I am still working on this. Will submit new patch this weekend or next week.
This issue does appear only when user setBatch or setAllowPartialResult(true),
because if user only accept complete row, when region moved we will
clearPartialResults() and set startRow to Bytes.add(lastResult.getRow(), new
byte[1]), it will be ok.
{quote}
So this is another issue related to Filter when batched read in place.
{quote}
Yes, there is another issue about the filter. I find this
{code}
// If the size limit was reached it means a partial Result is being
// returned. Returning a
// partial Result means that we should not reset the filters; filters
// should only be reset in
// between rows
if (!scannerContext.partialResultFormed()) resetFilters();
{code}
So we need check BATCH_LIMIT_REACHED,too right?
> 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
> Attachments: 15325-test.txt, HBASE-15325-v1.txt, 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-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.
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