diff --git a/rust/crd/src/constants.rs b/rust/crd/src/constants.rs
index fc63bbcd..bd677a35 100644
--- a/rust/crd/src/constants.rs
+++ b/rust/crd/src/constants.rs
@@ -47,6 +47,17 @@ pub const MAX_SPARK_LOG_FILES_SIZE: MemoryQuantity = MemoryQuantity {
     unit: BinaryMultiple::Mebi,
 };
 
+// Spark applications can have up to three init containers.
+// * `job` - copies user's application jar file from a volume to the expected location.
+// * `requirements` - install Python packages.
+// * `tls` - Generates a java trust store.
+// All of these containers have their output captured by Vector via `capture_shell_output`
+// and therefore also need space on the logging volume.
+pub const MAX_INIT_LOG_FILES_SIZE: MemoryQuantity = MemoryQuantity {
+    value: 3.0, // 1Mib for each possible container.
+    unit: BinaryMultiple::Mebi,
+};
+
 pub const OPERATOR_NAME: &str = "spark.stackable.tech";
 pub const CONTROLLER_NAME: &str = "sparkapplication";
 pub const POD_DRIVER_CONTROLLER_NAME: &str = "pod-driver";
diff --git a/rust/crd/src/lib.rs b/rust/crd/src/lib.rs
index 6681b078..17ca743e 100644
--- a/rust/crd/src/lib.rs
+++ b/rust/crd/src/lib.rs
@@ -325,7 +325,7 @@ impl SparkApplication {
                 .with_empty_dir(
                     None::<String>,
                     Some(product_logging::framework::calculate_log_volume_size_limit(
-                        &[MAX_SPARK_LOG_FILES_SIZE],
+                        &[MAX_SPARK_LOG_FILES_SIZE, MAX_INIT_LOG_FILES_SIZE],
                     )),
                 )
                 .build(),