Removing cap of processors on remote store related threadpools (#11432)

Signed-off-by: Gaurav Bafna <[email protected]>
opensearch-project · Dec 7, 2023 · 4ad2d4c · 4ad2d4c
1 parent 2a4aafd
commit 4ad2d4c
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Showing 2 changed files with 11 additions and 6 deletions.
diff --git a/server/src/main/java/org/opensearch/threadpool/ThreadPool.java b/server/src/main/java/org/opensearch/threadpool/ThreadPool.java
@@ -231,6 +231,7 @@ public ThreadPool(
 
         final Map<String, ExecutorBuilder> builders = new HashMap<>();
         final int allocatedProcessors = OpenSearchExecutors.allocatedProcessors(settings);
+        final int halfProc = halfAllocatedProcessors(allocatedProcessors);
         final int halfProcMaxAt5 = halfAllocatedProcessorsMaxFive(allocatedProcessors);
         final int halfProcMaxAt10 = halfAllocatedProcessorsMaxTen(allocatedProcessors);
         final int genericThreadPoolMax = boundedBy(4 * allocatedProcessors, 128, 512);
@@ -264,13 +265,13 @@ public ThreadPool(
         builders.put(Names.SYSTEM_WRITE, new FixedExecutorBuilder(settings, Names.SYSTEM_WRITE, halfProcMaxAt5, 1000, false));
         builders.put(
             Names.TRANSLOG_TRANSFER,
-            new ScalingExecutorBuilder(Names.TRANSLOG_TRANSFER, 1, halfProcMaxAt10, TimeValue.timeValueMinutes(5))
+            new ScalingExecutorBuilder(Names.TRANSLOG_TRANSFER, 1, halfProc, TimeValue.timeValueMinutes(5))
         );
         builders.put(Names.TRANSLOG_SYNC, new FixedExecutorBuilder(settings, Names.TRANSLOG_SYNC, allocatedProcessors * 4, 10000));
-        builders.put(Names.REMOTE_PURGE, new ScalingExecutorBuilder(Names.REMOTE_PURGE, 1, halfProcMaxAt5, TimeValue.timeValueMinutes(5)));
+        builders.put(Names.REMOTE_PURGE, new ScalingExecutorBuilder(Names.REMOTE_PURGE, 1, halfProc, TimeValue.timeValueMinutes(5)));
         builders.put(
             Names.REMOTE_REFRESH_RETRY,
-            new ScalingExecutorBuilder(Names.REMOTE_REFRESH_RETRY, 1, halfProcMaxAt10, TimeValue.timeValueMinutes(5))
+            new ScalingExecutorBuilder(Names.REMOTE_REFRESH_RETRY, 1, halfProc, TimeValue.timeValueMinutes(5))
         );
         builders.put(
             Names.REMOTE_RECOVERY,
@@ -555,6 +556,10 @@ static int boundedBy(int value, int min, int max) {
         return Math.min(max, Math.max(min, value));
     }
 
+    static int halfAllocatedProcessors(int allocatedProcessors) {
+        return (allocatedProcessors + 1) / 2;
+    }
+
     static int halfAllocatedProcessorsMaxFive(final int allocatedProcessors) {
         return boundedBy((allocatedProcessors + 1) / 2, 1, 5);
     }

diff --git a/server/src/test/java/org/opensearch/threadpool/ScalingThreadPoolTests.java b/server/src/test/java/org/opensearch/threadpool/ScalingThreadPoolTests.java
@@ -150,10 +150,10 @@ private int expectedSize(final String threadPoolName, final int numberOfProcesso
         sizes.put(ThreadPool.Names.SNAPSHOT, ThreadPool::halfAllocatedProcessorsMaxFive);
         sizes.put(ThreadPool.Names.FETCH_SHARD_STARTED, ThreadPool::twiceAllocatedProcessors);
         sizes.put(ThreadPool.Names.FETCH_SHARD_STORE, ThreadPool::twiceAllocatedProcessors);
-        sizes.put(ThreadPool.Names.TRANSLOG_TRANSFER, ThreadPool::halfAllocatedProcessorsMaxTen);
+        sizes.put(ThreadPool.Names.TRANSLOG_TRANSFER, ThreadPool::halfAllocatedProcessors);
         sizes.put(ThreadPool.Names.TRANSLOG_SYNC, n -> 4 * n);
-        sizes.put(ThreadPool.Names.REMOTE_PURGE, ThreadPool::halfAllocatedProcessorsMaxFive);
-        sizes.put(ThreadPool.Names.REMOTE_REFRESH_RETRY, ThreadPool::halfAllocatedProcessorsMaxTen);
+        sizes.put(ThreadPool.Names.REMOTE_PURGE, ThreadPool::halfAllocatedProcessors);
+        sizes.put(ThreadPool.Names.REMOTE_REFRESH_RETRY, ThreadPool::halfAllocatedProcessors);
         sizes.put(ThreadPool.Names.REMOTE_RECOVERY, ThreadPool::twiceAllocatedProcessors);
         return sizes.get(threadPoolName).apply(numberOfProcessors);
     }