HIVE-19833 : reduce LLAP IO min allocation to match ORC variable CB size (Sergey Shelukhin, reviewed by Gopal Vijayaraghavan)
Project: http://git-wip-us.apache.org/repos/asf/hive/repo Commit: http://git-wip-us.apache.org/repos/asf/hive/commit/66ed015d Tree: http://git-wip-us.apache.org/repos/asf/hive/tree/66ed015d Diff: http://git-wip-us.apache.org/repos/asf/hive/diff/66ed015d Branch: refs/heads/branch-3 Commit: 66ed015db068895db8c3a2c45285a2c74317d7e9 Parents: 2b5e215 Author: sergey <[email protected]> Authored: Mon Jun 11 12:06:55 2018 -0700 Committer: sergey <[email protected]> Committed: Mon Jun 11 12:07:13 2018 -0700 ---------------------------------------------------------------------- common/src/java/org/apache/hadoop/hive/conf/HiveConf.java | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hive/blob/66ed015d/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java ---------------------------------------------------------------------- diff --git a/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java b/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java index 12e8f41..155330b 100644 --- a/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java +++ b/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java @@ -3783,7 +3783,7 @@ public class HiveConf extends Configuration { "LLAP IO memory usage; 'cache' (the default) uses data and metadata cache with a\n" + "custom off-heap allocator, 'none' doesn't use either (this mode may result in\n" + "significant performance degradation)"), - LLAP_ALLOCATOR_MIN_ALLOC("hive.llap.io.allocator.alloc.min", "16Kb", new SizeValidator(), + LLAP_ALLOCATOR_MIN_ALLOC("hive.llap.io.allocator.alloc.min", "4Kb", new SizeValidator(), "Minimum allocation possible from LLAP buddy allocator. Allocations below that are\n" + "padded to minimum allocation. For ORC, should generally be the same as the expected\n" + "compression buffer size, or next lowest power of 2. Must be a power of 2."),
