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new eb69a3e9bec2 [SPARK-57604][BUILD] Upgrade log4j to 2.26.0 to fix JDK
25 ThrowableStackTraceRenderer NPE
eb69a3e9bec2 is described below
commit eb69a3e9bec2c9992e1ee539b8067850b94f40df
Author: Hyukjin Kwon <[email protected]>
AuthorDate: Wed Jun 24 06:39:56 2026 +0900
[SPARK-57604][BUILD] Upgrade log4j to 2.26.0 to fix JDK 25
ThrowableStackTraceRenderer NPE
### What changes were proposed in this pull request?
Upgrade `log4j` from 2.25.x to **2.26.0** (`pom.xml` and
`dev/deps/spark-deps-hadoop-3-hive-2.3`).
### Why are the changes needed?
Under JDK 25, log4j2's `ThrowableStackTraceRenderer` throws
`NullPointerException: Cannot read field "stackLength" because "metadata"
is null` when rendering
any logged exception's stack trace. On Spark this surfaces as
`FsHistoryProviderSuite`
"provider reports error after FS leaves safe mode" failing on the JDK 25
scheduled build.
Example failing upstream run (Build / Java25):
https://github.com/apache/spark/actions/runs/27894816608
log4j 2.26.0 fixes the renderer (snapshots the stack trace during metadata
population; upstream
LOG4J2 #3940 / #3955).
### Does this PR introduce any user-facing change?
No. Build/logging dependency upgrade.
### How was this patch tested?
Validated on a fork.
- `FsHistoryProviderSuite` "provider reports error after FS leaves safe
mode" is GREEN on **JDK 25**
with this bump:
https://github.com/HyukjinKwon/spark/actions/runs/27929988232
- Fully GREEN combined Maven (Scala 2.13, JDK 21) run that includes this
log4j bump, 0 failed jobs
(the same suite also fails on JDK 21 without the bump):
**https://github.com/HyukjinKwon/spark/actions/runs/27935083986**
- A combined JDK 25 proof run is also in progress:
https://github.com/HyukjinKwon/spark/actions/runs/27943439418
**Validated GREEN on the fork:** the full `Build / Java25 (Scala 2.13, JDK
25)` build is green with this log4j 2.26.0 upgrade
(FsHistoryProvider/ThrowableStackTraceRenderer NPE gone):
https://github.com/HyukjinKwon/spark/actions/runs/27937860264
### Was this patch authored or co-authored using generative AI tooling?
Yes. Drafted with Claude Code (Anthropic) and reviewed before submission.
Closes #56660 from HyukjinKwon/ci-fix/log4j-2.26.0.
Authored-by: Hyukjin Kwon <[email protected]>
Signed-off-by: Hyukjin Kwon <[email protected]>
---
dev/deps/spark-deps-hadoop-3-hive-2.3 | 10 +++++-----
pom.xml | 2 +-
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/dev/deps/spark-deps-hadoop-3-hive-2.3
b/dev/deps/spark-deps-hadoop-3-hive-2.3
index 5b9647045146..fdfe82e1a9b1 100644
--- a/dev/deps/spark-deps-hadoop-3-hive-2.3
+++ b/dev/deps/spark-deps-hadoop-3-hive-2.3
@@ -184,11 +184,11 @@ lapack/3.2.0//lapack-3.2.0.jar
leveldbjni-all/1.8//leveldbjni-all-1.8.jar
libfb303/0.9.3//libfb303-0.9.3.jar
libthrift/0.16.0//libthrift-0.16.0.jar
-log4j-1.2-api/2.25.4//log4j-1.2-api-2.25.4.jar
-log4j-api/2.25.4//log4j-api-2.25.4.jar
-log4j-core/2.25.4//log4j-core-2.25.4.jar
-log4j-layout-template-json/2.25.4//log4j-layout-template-json-2.25.4.jar
-log4j-slf4j2-impl/2.25.4//log4j-slf4j2-impl-2.25.4.jar
+log4j-1.2-api/2.26.0//log4j-1.2-api-2.26.0.jar
+log4j-api/2.26.0//log4j-api-2.26.0.jar
+log4j-core/2.26.0//log4j-core-2.26.0.jar
+log4j-layout-template-json/2.26.0//log4j-layout-template-json-2.26.0.jar
+log4j-slf4j2-impl/2.26.0//log4j-slf4j2-impl-2.26.0.jar
lz4-java/1.11.0//lz4-java-1.11.0.jar
metrics-core/4.2.37//metrics-core-4.2.37.jar
metrics-graphite/4.2.37//metrics-graphite-4.2.37.jar
diff --git a/pom.xml b/pom.xml
index 6a6bdf9c2133..f195b8b59a89 100644
--- a/pom.xml
+++ b/pom.xml
@@ -128,7 +128,7 @@
<sbt.project.name>spark</sbt.project.name>
<asm.version>9.9.1</asm.version>
<slf4j.version>2.0.17</slf4j.version>
- <log4j.version>2.25.4</log4j.version>
+ <log4j.version>2.26.0</log4j.version>
<!-- make sure to update IsolatedClientLoader whenever this version is
changed -->
<hadoop.version>3.5.0</hadoop.version>
<!-- SPARK-41247: When updating `protobuf.version`, also need to update
`protoVersion` in `SparkBuild.scala` -->
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