(uniffle) branch master updated: [#2492][FOLLOWUP] improvement: change the default value of chunkPoolCapacityRatio (#2554)

[xi...@apache.org]

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


The following commit(s) were added to refs/heads/master by this push:
     new 4b256e9c5 [#2492][FOLLOWUP] improvement: change the default value of chunkPoolCapacityRatio (#2554)
4b256e9c5 is described below

commit 4b256e9c5d211e5577c0902c3de551d2a9844665
Author: xianjingfeng <xi...@gmail.com>
AuthorDate: Fri Jul 25 17:35:08 2025 +0800

    [#2492][FOLLOWUP] improvement: change the default value of chunkPoolCapacityRatio (#2554)
    
    ### What changes were proposed in this pull request?
    Change the default value of chunkPoolCapacityRatio
    
    ### Why are the changes needed?
    The proportion and the frequency of small blocks is not high. If this value is set too high, it may cause off-heap memory overflow.
    Fix: #2492
    
    ### Does this PR introduce any user-facing change?
    No.
    
    ### How was this patch tested?
    Verify in production environment.
---
 server/src/main/java/org/apache/uniffle/server/ShuffleServerConf.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/src/main/java/org/apache/uniffle/server/ShuffleServerConf.java b/server/src/main/java/org/apache/uniffle/server/ShuffleServerConf.java
index 7490f97a7..ea7bed551 100644
--- a/server/src/main/java/org/apache/uniffle/server/ShuffleServerConf.java
+++ b/server/src/main/java/org/apache/uniffle/server/ShuffleServerConf.java
@@ -538,7 +538,7 @@ public class ShuffleServerConf extends RssBaseConf {
   public static final ConfigOption<Double> SERVER_SHUFFLE_BUFFER_LAB_CHUNK_POOL_CAPACITY_RATIO =
       ConfigOptions.key("rss.server.buffer.lab.chunkPoolCapacityRatio")
           .doubleType()
-          .defaultValue(1.0)
+          .defaultValue(0.1)
           .withDescription(
               "Controls the maximum memory capacity ratio between LAB's chunk pool and the configured buffer capacity. "
                   + "The ratio represents (total memory of chunk pool) / "