Github user JamesRTaylor commented on a diff in the pull request:
https://github.com/apache/phoenix/pull/156#discussion_r58484293
--- Diff:
phoenix-core/src/main/java/org/apache/phoenix/iterate/TableResultIterator.java
---
@@ -107,8 +127,37 @@ public synchronized void close() throws SQLException {
@Override
public synchronized Tuple next() throws SQLException {
initScanner();
- Tuple t = scanIterator.next();
- return t;
+ try {
+ lastTuple = scanIterator.next();
+ if (lastTuple != null) {
+ ImmutableBytesWritable ptr = new ImmutableBytesWritable();
+ lastTuple.getKey(ptr);
+ }
+ } catch (SQLException e) {
+ try {
+ throw ServerUtil.parseServerException(e);
+ } catch(StaleRegionBoundaryCacheException e1) {
+ if(scan.getAttribute(NON_AGGREGATE_QUERY)!=null) {
+ Scan newScan = ScanUtil.newScan(scan);
+ if(lastTuple != null) {
+ lastTuple.getKey(ptr);
+ byte[] startRowSuffix =
ByteUtil.copyKeyBytesIfNecessary(ptr);
+ if(ScanUtil.isLocalIndex(newScan)) {
+ newScan.setAttribute(SCAN_START_ROW_SUFFIX,
ByteUtil.nextKey(startRowSuffix));
+ } else {
+
newScan.setStartRow(ByteUtil.nextKey(startRowSuffix));
+ }
+ }
+
plan.getContext().getConnection().getQueryServices().clearTableRegionCache(htable.getTableName());
+ this.scanIterator =
+
plan.iterator(DefaultParallelScanGrouper.getInstance(), newScan);
--- End diff --
Getting the ParallelScanGrouper here as state instead of assuming the
default one is being used may be necessary (or making it not necessary to have
this ParallelScanGrouper - it's an edge case for the MR integration - there's
likely a better way - perhaps the plan itself could know what to use for the
ParallelScanGrouper?)
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