bsglz commented on a change in pull request #767:
URL: https://github.com/apache/hbase/pull/767#discussion_r415288472
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File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.java
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@@ -372,10 +372,11 @@ protected static Cell createStartKeyFromRow(byte[]
startRow, ScanInfo scanInfo)
if (userScan != null) {
if (userScan.isRaw()) {
resultMaxVersion = userScan.getMaxVersions();
+ maxVersionToCheck = userScan.getMaxVersions();
} else {
resultMaxVersion = Math.min(userScan.getMaxVersions(),
scanInfo.getMaxVersions());
+ maxVersionToCheck = userScan.hasFilter() ? scanInfo.getMaxVersions() :
resultMaxVersion;
Review comment:
This logic is existing before this pr, but it did not choose the right
versions when use raw.
I summarize the logic as below:
##**scan type**## ##**maxVersionToCheck**## ##**resultMaxVersion**##
common w/o filter ,min(userScan,scanInfo) ,min(userScan,scanInfo)
common w/ filter ,scanInfo ,userScan
raw w/o filter ,userScan ,userScan
raw w/ filter ,Integer.MAX_VALUE ,userScan
If i am right, the existing logic need two changes;
1: In isRaw=true branch, set maxVersionToCheck as Integer.MAX_VALUE;
2: Move the line with userScan.hasFilter() into isRaw=false branch;
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