priyankporwal commented on a change in pull request #469: PHOENIX-5156
Consistent Global Indexes for Non-Transactional Tables
URL: https://github.com/apache/phoenix/pull/469#discussion_r282148497
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File path: phoenix-core/src/main/java/org/apache/phoenix/util/IndexUtil.java
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@@ -849,4 +860,80 @@ public static long
getIndexPendingDisableCount(PhoenixConnection conn, String fa
throw new IOException(e);
}
}
+
+ private static boolean containsOneOrMoreColumn(Scan scan) {
+ Map<byte[], NavigableSet<byte[]>> familyMap = scan.getFamilyMap();
+ if (familyMap == null || familyMap.isEmpty()) {
+ return false;
+ }
+ for (Map.Entry<byte[], NavigableSet<byte[]>> entry :
familyMap.entrySet()) {
+ NavigableSet<byte[]> family = entry.getValue();
+ if (family != null && !family.isEmpty()) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private static void addEmptyColumnToScan(Scan scan, byte[] emptyCF, byte[]
emptyCQ) {
+ boolean addedEmptyColumn = false;
+ Iterator<Filter> iterator = ScanUtil.getFilterIterator(scan);
+ while (iterator.hasNext()) {
+ Filter filter = iterator.next();
+ if (filter instanceof EncodedQualifiersColumnProjectionFilter) {
+ ((EncodedQualifiersColumnProjectionFilter)
filter).addTrackedColumn(ENCODED_EMPTY_COLUMN_NAME);
+ if (!addedEmptyColumn && containsOneOrMoreColumn(scan)) {
+ scan.addColumn(emptyCF, emptyCQ);
+ }
+ }
+ else if (filter instanceof ColumnProjectionFilter) {
+ ((ColumnProjectionFilter) filter).addTrackedColumn(new
ImmutableBytesPtr(emptyCF), new ImmutableBytesPtr(emptyCQ));
+ if (!addedEmptyColumn && containsOneOrMoreColumn(scan)) {
+ scan.addColumn(emptyCF, emptyCQ);
+ }
+ }
+ else if (filter instanceof MultiEncodedCQKeyValueComparisonFilter)
{
+ ((MultiEncodedCQKeyValueComparisonFilter)
filter).setMinQualifier(ENCODED_EMPTY_COLUMN_NAME);
+ }
+ else if (!addedEmptyColumn && filter instanceof
FirstKeyOnlyFilter) {
+ scan.addColumn(emptyCF, emptyCQ);
+ addedEmptyColumn = true;
+ }
+ }
+ if (!addedEmptyColumn && containsOneOrMoreColumn(scan)) {
+ scan.addColumn(emptyCF, emptyCQ);
+ }
+ }
+
+ public static void setScanAttributes(Scan scan, PTable table,
PhoenixConnection phoenixConnection) throws SQLException {
Review comment:
Nit: Can we rename this method to setScanAtributesForIndexRepair or similar?
Also, wondering why the method is in IndexUtil vs Scan or IndexMaintainer.
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