[hive] branch master updated: HIVE-22896 : Increase fast hashtable size on detecting initial collision (Rajesh Balamohan via Ashutosh Chauhan)

[hashutosh]

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hashutosh pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/hive.git


The following commit(s) were added to refs/heads/master by this push:
     new 5012954  HIVE-22896 : Increase fast hashtable size on detecting 
initial collision (Rajesh Balamohan via Ashutosh Chauhan)
5012954 is described below

commit 5012954396c98c94d0ff64fe3bbdb74e6077f190
Author: Rajesh Balamohan <rbalamo...@apache.org>
AuthorDate: Wed Feb 19 15:03:27 2020 -0800

    HIVE-22896 : Increase fast hashtable size on detecting initial collision 
(Rajesh Balamohan via Ashutosh Chauhan)
    
    Signed-off-by: Ashutosh Chauhan <hashut...@apache.org>
---
 .../hive/ql/exec/vector/mapjoin/fast/VectorMapJoinFastHashTable.java  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git 
a/ql/src/java/org/apache/hadoop/hive/ql/exec/vector/mapjoin/fast/VectorMapJoinFastHashTable.java
 
b/ql/src/java/org/apache/hadoop/hive/ql/exec/vector/mapjoin/fast/VectorMapJoinFastHashTable.java
index 248d125..f4541f7 100644
--- 
a/ql/src/java/org/apache/hadoop/hive/ql/exec/vector/mapjoin/fast/VectorMapJoinFastHashTable.java
+++ 
b/ql/src/java/org/apache/hadoop/hive/ql/exec/vector/mapjoin/fast/VectorMapJoinFastHashTable.java
@@ -29,8 +29,8 @@ import 
org.apache.hadoop.hive.ql.exec.vector.mapjoin.hashtable.VectorMapJoinNonM
 public abstract class VectorMapJoinFastHashTable implements 
VectorMapJoinHashTable {
   public static final Logger LOG = 
LoggerFactory.getLogger(VectorMapJoinFastHashTable.class);
 
-  // when rehashing, jump directly to 4k items
-  public static final int FIRST_SIZE_UP = 4096;
+  // when rehashing, jump directly to 1M items
+  public static final int FIRST_SIZE_UP = 1048576;
 
   protected final boolean isFullOuter;