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https://issues.apache.org/jira/browse/PHOENIX-4296?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas D'Silva reassigned PHOENIX-4296:
---------------------------------------
Assignee: Chen Feng
> Dead loop in HBase reverse scan when amount of scan data is greater than
> SCAN_RESULT_CHUNK_SIZE
> -----------------------------------------------------------------------------------------------
>
> Key: PHOENIX-4296
> URL: https://issues.apache.org/jira/browse/PHOENIX-4296
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.6.0
> Reporter: rukawakang
> Assignee: Chen Feng
> Priority: Major
> Fix For: 4.14.2
>
> Attachments: PHOENIX-4296-4.x-HBase-1.2-v2.patch,
> PHOENIX-4296-4.x-HBase-1.2-v3.patch, PHOENIX-4296-4.x-HBase-1.2.patch,
> PHOENIX-4296.patch
>
>
> This problem seems to only occur with reverse scan not forward scan. When
> amount of scan data is greater than SCAN_RESULT_CHUNK_SIZE(default 2999),
> Class ChunkedResultIteratorFactory will multiple calls function
> getResultIterator. But in function getResultIterator it always readjusts
> startRow, in fact, if in reverse scan we should readjust stopRow. For example
> {code:java}
> if (ScanUtil.isReversed(scan)) {
> scan.setStopRow(ByteUtil.copyKeyBytesIfNecessary(lastKey));
> } else {
> scan.setStartRow(ByteUtil.copyKeyBytesIfNecessary(lastKey));
> }
> {code}
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