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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-2628) Ensure split when iterating through results handled correctly
Date Tue, 05 Apr 2016 03:53:25 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-2628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15225636#comment-15225636
] 

ASF GitHub Bot commented on PHOENIX-2628:
-----------------------------------------

Github user JamesRTaylor commented on a diff in the pull request:

    https://github.com/apache/phoenix/pull/156#discussion_r58483591
  
    --- Diff: phoenix-core/src/main/java/org/apache/phoenix/iterate/BaseResultIterators.java
---
    @@ -556,35 +564,55 @@ private static String toString(List<byte[]> gps) {
                     } else {
                         endKey = regionBoundaries.get(regionIndex);
                     }
    -                HRegionLocation regionLocation = regionLocations.get(regionIndex);
    -                if (isLocalIndex) {
    -                    HRegionInfo regionInfo = regionLocation.getRegionInfo();
    -                    endRegionKey = regionInfo.getEndKey();
    -                    keyOffset = ScanUtil.getRowKeyOffset(regionInfo.getStartKey(), endRegionKey);
    -                }
    -                try {
    -                    while (guideIndex < gpsSize && (currentGuidePost.compareTo(endKey)
<= 0 || endKey.length == 0)) {
    -                        Scan newScan = scanRanges.intersectScan(scan, currentKeyBytes,
currentGuidePostBytes, keyOffset,
    -                                false);
    -                        estimatedRows += gps.getRowCounts().get(guideIndex);
    -                        estimatedSize += gps.getByteCounts().get(guideIndex);
    -                        scans = addNewScan(parallelScans, scans, newScan, currentGuidePostBytes,
false, regionLocation);
    -                        currentKeyBytes = currentGuidePost.copyBytes();
    -                        currentGuidePost = PrefixByteCodec.decode(decoder, input);
    -                        currentGuidePostBytes = currentGuidePost.copyBytes();
    -                        guideIndex++;
    -                    }
    -                } catch (EOFException e) {}
    -                Scan newScan = scanRanges.intersectScan(scan, currentKeyBytes, endKey,
keyOffset, true);
    -                if (isLocalIndex) {
    -                    if (newScan != null) {
    -                        newScan.setAttribute(EXPECTED_UPPER_REGION_KEY, endRegionKey);
    -                    } else if (!scans.isEmpty()) {
    -                        scans.get(scans.size()-1).setAttribute(EXPECTED_UPPER_REGION_KEY,
endRegionKey);
    -                    }
    -                }
    -                scans = addNewScan(parallelScans, scans, newScan, endKey, true, regionLocation);
    -                currentKeyBytes = endKey;
    +                if (Bytes.compareTo(scan.getStartRow(), context.getScan().getStartRow())
!= 0
    +                     || Bytes.compareTo(scan.getStopRow(), context.getScan().getStopRow())
!= 0) {
    --- End diff --
    
    Also, this code path is strange. What's the entry point? Does it need to be mixed up with
the existing code? It feels like we've completely forked the flow here. Why not have it in
it's own method called only when this special case is detected?


> Ensure split when iterating through results handled correctly
> -------------------------------------------------------------
>
>                 Key: PHOENIX-2628
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2628
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>            Assignee: Rajeshbabu Chintaguntla
>             Fix For: 4.8.0
>
>         Attachments: PHOENIX-2628-wip.patch, PHOENIX-2628.patch, PHOENIX-2628_v7.patch,
PHOENIX-2628_v8.patch
>
>
> We should start with a test case to ensure this works correctly, both for scans and aggregates.



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