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The following commit(s) were added to refs/heads/main by this push:
new c8f5740e0 Update release notes for 2.1.6
c8f5740e0 is described below
commit c8f5740e023f4abb7b82f943ff1a60a61eacf509
Author: Christopher Tubbs <[email protected]>
AuthorDate: Fri Jul 17 01:40:43 2026 -0400
Update release notes for 2.1.6
---
_posts/release/2025-08-20-accumulo-2.1.4.md | 2 +-
_posts/release/2026-07-08-accumulo-2.1.5.md | 1 +
_posts/release/2026-07-17-accumulo-2.1.6.md | 31 +++++++++++++++++------------
3 files changed, 20 insertions(+), 14 deletions(-)
diff --git a/_posts/release/2025-08-20-accumulo-2.1.4.md
b/_posts/release/2025-08-20-accumulo-2.1.4.md
index 3b1476c1d..cd2a11d4b 100644
--- a/_posts/release/2025-08-20-accumulo-2.1.4.md
+++ b/_posts/release/2025-08-20-accumulo-2.1.4.md
@@ -2,7 +2,7 @@
title: Apache Accumulo 2.1.4
sortableversion: '02.01.04'
LTM: true
-archived: true
+archived_critical: true
---
## About
diff --git a/_posts/release/2026-07-08-accumulo-2.1.5.md
b/_posts/release/2026-07-08-accumulo-2.1.5.md
index a04941560..c842f0028 100644
--- a/_posts/release/2026-07-08-accumulo-2.1.5.md
+++ b/_posts/release/2026-07-08-accumulo-2.1.5.md
@@ -2,6 +2,7 @@
title: Apache Accumulo 2.1.5
sortableversion: '02.01.05'
LTM: true
+archived_critical: true
---
## About
diff --git a/_posts/release/2026-07-17-accumulo-2.1.6.md
b/_posts/release/2026-07-17-accumulo-2.1.6.md
index f5c6f0838..9b6eaa3c6 100644
--- a/_posts/release/2026-07-17-accumulo-2.1.6.md
+++ b/_posts/release/2026-07-17-accumulo-2.1.6.md
@@ -2,7 +2,6 @@
title: Apache Accumulo 2.1.6
sortableversion: '02.01.06'
LTM: true
-draft: true
---
## About
@@ -11,25 +10,31 @@ fixes and minor enhancements. This version supersedes
earlier 2.1 releases
and users upgrading to 2.1 should upgrade directly to this version instead of
any prior 2.1 release.
-## Notable Changes
+## Important Security Fixes
-* {% ghi 6461 %} Hadoop minimum compatibility was changed from 3.0.x to 3.3.x
- to make use of a new API for opening files.
-* {% ghi 6460 %} Changes the API used for opening files that will reduce calls
- to the NameNode when the FileStatus has already been retrieved for the file.
+* {% ghi 6478 %} - This version fixes a security flaw discovered in 2.1.4 and
+ 2.1.5 that allowed an authenticated user without system permissions to issue
+ a graceful shutdown request to all Accumulo services. This action could lead
+ to a denial of service on an Accumulo cluster. While this action logged a
+ message that the action was denied, the request would have been honored by
+ the server, and the server would have still shut down.
-### Notable Bug Fixes
+## Other Notable Changes
-### Other Improvements
+The following changes were made to improve performance and stability:
-* {% ghi 6449 %} Modifies the Garbage Collector to use a server-side filter
- when processing candidate files.
-
-### Semver violations
+* {% ghi 6449 %} - The Garbage Collector was modified to use a server-side
+ filter when processing candidate files to reduce memory usage.
+* {% ghi 6470 %} - Some client code was updated to avoid some deadlocks that
+ were possible if a user failed to close scanners before closing the
+ AccumuloClient associated with them.
+* {% ghi 6450 %}, {% ghi 6451 %} - Some data structures were changed throughout
+ the code to set their expected size upon creation, in order to avoid
+ resizing-related performance penalties.
## Requirements
-Accumulo 2.1.6 requires JDK 21 to build, but still supports Java 11 runtime.
+This version requires JDK 21 to build, but still supports Java 11 runtime.
## Upgrading
