diff --git a/src/replica/replica_stub.cpp b/src/replica/replica_stub.cpp
index 67db1a6950..d3c14e2337 100644
--- a/src/replica/replica_stub.cpp
+++ b/src/replica/replica_stub.cpp
@@ -2094,7 +2094,7 @@ replica *replica_stub::new_replica(gpid gpid,
 /* static */ bool
 replica_stub::parse_replica_dir_name(const std::string &dir_name, gpid &pid, std::string &app_type)
 {
-    std::vector<int32_t> ids(2, 0);
+    std::vector<uint32_t> ids(2, 0);
     size_t begin = 0;
     for (auto &id : ids) {
         size_t end = dir_name.find('.', begin);
@@ -2102,7 +2102,7 @@ replica_stub::parse_replica_dir_name(const std::string &dir_name, gpid &pid, std
             return false;
         }
 
-        if (!buf2int32(std::string_view(dir_name.data() + begin, end - begin), id)) {
+        if (!buf2uint32(std::string_view(dir_name.data() + begin, end - begin), id)) {
             return false;
         }
 
@@ -2113,8 +2113,8 @@ replica_stub::parse_replica_dir_name(const std::string &dir_name, gpid &pid, std
         return false;
     }
 
-    pid.set_app_id(ids[0]);
-    pid.set_partition_index(ids[1]);
+    pid.set_app_id(static_cast<int32_t>(ids[0]));
+    pid.set_partition_index(static_cast<int32_t>(ids[1]));
 
     // TODO(wangdan): the 3rd parameter `count` does not support default argument for CentOS 7
     // (gcc 7.3.1). After CentOS 7 is deprecated, consider dropping std::string::npos.
diff --git a/src/replica/test/replica_dir_test.cpp b/src/replica/test/replica_dir_test.cpp
index 2d5349af8a..3bc64d74f8 100644
--- a/src/replica/test/replica_dir_test.cpp
+++ b/src/replica/test/replica_dir_test.cpp
@@ -18,6 +18,7 @@
 #include <string>
 #include <vector>
 
+#include "common/gpid.h"
 #include "gtest/gtest.h"
 #include "replica/replica_stub.h"
 
@@ -97,8 +98,26 @@ class ParseReplicaDirNameTest : public testing::TestWithParam<parse_replica_dir_
 TEST_P(ParseReplicaDirNameTest, ParseReplicaDirName) { test_parse_replica_dir_name(); }
 
 const std::vector<parse_replica_dir_name_case> parse_replica_dir_name_tests{
+    // Empty dir name.
     {"", false, {}, ""},
+    // Single-digit IDs.
     {"1.2.pegasus", true, {1, 2}, "pegasus"},
+    // Multi-digit IDs.
+    {"1234.56789.pegasus", true, {1234, 56789}, "pegasus"},
+    // Custom app type other than "pegasus".
+    {"1.2.another", true, {1, 2}, "another"},
+    // Custom app type with dot.
+    {"1.2.another.pegasus", true, {1, 2}, "another.pegasus"},
+    // Custom app type with other specific symbol.
+    {"1.2.another_pegasus", true, {1, 2}, "another_pegasus"},
+    // Missing one ID.
+    {"1.pegasus", false, {}, ""},
+    // Missing both IDs.
+    {"pegasus", false, {}, ""},
+    // ID with letter.
+    {"1.2a.pegasus", false, {}, ""},
+    // ID with minus.
+    {"1.-2.pegasus", false, {}, ""},
 };
 
 INSTANTIATE_TEST_SUITE_P(ReplicaDirTest,