Github user twdsilva commented on a diff in the pull request:
https://github.com/apache/phoenix/pull/351#discussion_r218656332
--- Diff:
phoenix-core/src/main/java/org/apache/phoenix/schema/MetaDataClient.java ---
@@ -1279,6 +1279,7 @@ private long updateStatisticsInternal(PName
physicalName, PTable logicalTable, M
MutationPlan plan =
compiler.compile(Collections.singletonList(tableRef), null, cfs, null,
clientTimeStamp);
Scan scan = plan.getContext().getScan();
scan.setCacheBlocks(false);
+ scan.readAllVersions();
--- End diff --
How is this going to work with the table sampling feature? When we query we
only see the latest version of a cell, so if UPDATE STATISTICS is run for a
table with has rows with multiple versions, won't the sampling be off?
---
