[
https://issues.apache.org/jira/browse/PHOENIX-2628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15227463#comment-15227463
]
ASF GitHub Bot commented on PHOENIX-2628:
-----------------------------------------
Github user chrajeshbabu commented on a diff in the pull request:
https://github.com/apache/phoenix/pull/156#discussion_r58637933
--- 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 --
Yes aggregate queries are already handled properly. This code is only for
handling splits when we are in the middle of non aggregate queries. If there
are splits in the starting of the query then we are throwing out the stale
region exception to BaseResultIterators which handles creating the proper
parallel scans.
+ if(scan.getAttribute(NON_AGGREGATE_QUERY)!=null) {
> 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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