diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc2461a9c2..785b7c89ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - \#92 - Speed up CMake build process
 - \#96 - Remove .a file in milvus/lib for docker-version
 - \#118 - Using shared_ptr instead of weak_ptr to avoid performance loss
+- \#122 - Add unique id for Job
 
 ## Feature
 - \#115 - Using new structure for tasktable
diff --git a/core/src/db/DBImpl.cpp b/core/src/db/DBImpl.cpp
index 324d304e2a..6995de3d14 100644
--- a/core/src/db/DBImpl.cpp
+++ b/core/src/db/DBImpl.cpp
@@ -136,7 +136,7 @@ DBImpl::DeleteTable(const std::string& table_id, const meta::DatesT& dates) {
 
         // scheduler will determine when to delete table files
         auto nres = scheduler::ResMgrInst::GetInstance()->GetNumOfComputeResource();
-        scheduler::DeleteJobPtr job = std::make_shared<scheduler::DeleteJob>(0, table_id, meta_ptr_, nres);
+        scheduler::DeleteJobPtr job = std::make_shared<scheduler::DeleteJob>(table_id, meta_ptr_, nres);
         scheduler::JobMgrInst::GetInstance()->Put(job);
         job->WaitAndDelete();
     } else {
@@ -439,7 +439,7 @@ DBImpl::QueryAsync(const std::string& table_id, const meta::TableFilesSchema& fi
 
     // step 1: get files to search
     ENGINE_LOG_DEBUG << "Engine query begin, index file count: " << files.size();
-    scheduler::SearchJobPtr job = std::make_shared<scheduler::SearchJob>(0, k, nq, nprobe, vectors);
+    scheduler::SearchJobPtr job = std::make_shared<scheduler::SearchJob>(k, nq, nprobe, vectors);
     for (auto& file : files) {
         scheduler::TableFileSchemaPtr file_ptr = std::make_shared<meta::TableFileSchema>(file);
         job->AddIndexFile(file_ptr);
@@ -754,7 +754,7 @@ DBImpl::BackgroundBuildIndex() {
     Status status;
 
     if (!to_index_files.empty()) {
-        scheduler::BuildIndexJobPtr job = std::make_shared<scheduler::BuildIndexJob>(0, meta_ptr_, options_);
+        scheduler::BuildIndexJobPtr job = std::make_shared<scheduler::BuildIndexJob>(meta_ptr_, options_);
 
         // step 2: put build index task to scheduler
         for (auto& file : to_index_files) {
diff --git a/core/src/scheduler/ResourceMgr.h b/core/src/scheduler/ResourceMgr.h
index 4d2361fb3d..31a1063e5d 100644
--- a/core/src/scheduler/ResourceMgr.h
+++ b/core/src/scheduler/ResourceMgr.h
@@ -75,7 +75,6 @@ class ResourceMgr : public interface::dumpable {
         return gpu_resources_;
     }
 
-    // TODO(wxyu): why return shared pointer
     inline std::vector<ResourcePtr>
     GetAllResources() {
         return resources_;
diff --git a/core/src/scheduler/job/BuildIndexJob.cpp b/core/src/scheduler/job/BuildIndexJob.cpp
index 39c08b6b51..4c4c3b5054 100644
--- a/core/src/scheduler/job/BuildIndexJob.cpp
+++ b/core/src/scheduler/job/BuildIndexJob.cpp
@@ -23,8 +23,8 @@
 namespace milvus {
 namespace scheduler {
 
-BuildIndexJob::BuildIndexJob(JobId id, engine::meta::MetaPtr meta_ptr, engine::DBOptions options)
-    : Job(id, JobType::BUILD), meta_ptr_(std::move(meta_ptr)), options_(std::move(options)) {
+BuildIndexJob::BuildIndexJob(engine::meta::MetaPtr meta_ptr, engine::DBOptions options)
+    : Job(JobType::BUILD), meta_ptr_(std::move(meta_ptr)), options_(std::move(options)) {
 }
 
 bool
@@ -59,6 +59,8 @@ BuildIndexJob::Dump() const {
     json ret{
         {"number_of_to_index_file", to_index_files_.size()},
     };
+    auto base = Job::Dump();
+    ret.insert(base.begin(), base.end());
     return ret;
 }
 
diff --git a/core/src/scheduler/job/BuildIndexJob.h b/core/src/scheduler/job/BuildIndexJob.h
index e3450ee048..9dba5854b6 100644
--- a/core/src/scheduler/job/BuildIndexJob.h
+++ b/core/src/scheduler/job/BuildIndexJob.h
@@ -41,7 +41,7 @@ using Id2ToTableFileMap = std::unordered_map<size_t, TableFileSchema>;
 
 class BuildIndexJob : public Job {
  public:
-    explicit BuildIndexJob(JobId id, engine::meta::MetaPtr meta_ptr, engine::DBOptions options);
+    explicit BuildIndexJob(engine::meta::MetaPtr meta_ptr, engine::DBOptions options);
 
  public:
     bool
diff --git a/core/src/scheduler/job/DeleteJob.cpp b/core/src/scheduler/job/DeleteJob.cpp
index 04a9557177..f2131ffb5b 100644
--- a/core/src/scheduler/job/DeleteJob.cpp
+++ b/core/src/scheduler/job/DeleteJob.cpp
@@ -22,8 +22,8 @@
 namespace milvus {
 namespace scheduler {
 
-DeleteJob::DeleteJob(JobId id, std::string table_id, engine::meta::MetaPtr meta_ptr, uint64_t num_resource)
-    : Job(id, JobType::DELETE),
+DeleteJob::DeleteJob(std::string table_id, engine::meta::MetaPtr meta_ptr, uint64_t num_resource)
+    : Job(JobType::DELETE),
       table_id_(std::move(table_id)),
       meta_ptr_(std::move(meta_ptr)),
       num_resource_(num_resource) {
@@ -52,6 +52,8 @@ DeleteJob::Dump() const {
         {"number_of_resource", num_resource_},
         {"number_of_done", done_resource},
     };
+    auto base = Job::Dump();
+    ret.insert(base.begin(), base.end());
     return ret;
 }
 
diff --git a/core/src/scheduler/job/DeleteJob.h b/core/src/scheduler/job/DeleteJob.h
index 93e5aa40cc..a20d67d45a 100644
--- a/core/src/scheduler/job/DeleteJob.h
+++ b/core/src/scheduler/job/DeleteJob.h
@@ -35,7 +35,7 @@ namespace scheduler {
 
 class DeleteJob : public Job {
  public:
-    DeleteJob(JobId id, std::string table_id, engine::meta::MetaPtr meta_ptr, uint64_t num_resource);
+    DeleteJob(std::string table_id, engine::meta::MetaPtr meta_ptr, uint64_t num_resource);
 
  public:
     void
diff --git a/core/src/scheduler/job/Job.cpp b/core/src/scheduler/job/Job.cpp
index 954ea11f1b..1199fe17a6 100644
--- a/core/src/scheduler/job/Job.cpp
+++ b/core/src/scheduler/job/Job.cpp
@@ -15,7 +15,29 @@
 // specific language governing permissions and limitations
 // under the License.
 
-//
-// Created by wxyu on 2019/10/28.
-//
+#include "Job.h"
 
+namespace milvus {
+namespace scheduler {
+
+namespace {
+std::mutex unique_job_mutex;
+uint64_t unique_job_id = 0;
+}  // namespace
+
+Job::Job(JobType type) : type_(type) {
+    std::lock_guard<std::mutex> lock(unique_job_mutex);
+    id_ = unique_job_id++;
+}
+
+json
+Job::Dump() const {
+    json ret{
+        {"id", id_},
+        {"type", type_},
+    };
+    return ret;
+}
+
+}  // namespace scheduler
+}  // namespace milvus
diff --git a/core/src/scheduler/job/Job.h b/core/src/scheduler/job/Job.h
index 709db8cffc..949164a8d0 100644
--- a/core/src/scheduler/job/Job.h
+++ b/core/src/scheduler/job/Job.h
@@ -53,12 +53,14 @@ class Job : public interface::dumpable {
         return type_;
     }
 
+    json
+    Dump() const override;
+
  protected:
-    Job(JobId id, JobType type) : id_(id), type_(type) {
-    }
+    explicit Job(JobType type);
 
  private:
-    JobId id_;
+    JobId id_ = 0;
     JobType type_;
 };
 
diff --git a/core/src/scheduler/job/SearchJob.cpp b/core/src/scheduler/job/SearchJob.cpp
index 1143e33add..47c825c122 100644
--- a/core/src/scheduler/job/SearchJob.cpp
+++ b/core/src/scheduler/job/SearchJob.cpp
@@ -21,8 +21,8 @@
 namespace milvus {
 namespace scheduler {
 
-SearchJob::SearchJob(milvus::scheduler::JobId id, uint64_t topk, uint64_t nq, uint64_t nprobe, const float* vectors)
-    : Job(id, JobType::SEARCH), topk_(topk), nq_(nq), nprobe_(nprobe), vectors_(vectors) {
+SearchJob::SearchJob(uint64_t topk, uint64_t nq, uint64_t nprobe, const float* vectors)
+    : Job(JobType::SEARCH), topk_(topk), nq_(nq), nprobe_(nprobe), vectors_(vectors) {
 }
 
 bool
@@ -70,6 +70,8 @@ SearchJob::Dump() const {
         {"nq", nq_},
         {"nprobe", nprobe_},
     };
+    auto base = Job::Dump();
+    ret.insert(base.begin(), base.end());
     return ret;
 }
 
diff --git a/core/src/scheduler/job/SearchJob.h b/core/src/scheduler/job/SearchJob.h
index 6c2bd7eea9..1e586090b9 100644
--- a/core/src/scheduler/job/SearchJob.h
+++ b/core/src/scheduler/job/SearchJob.h
@@ -43,7 +43,7 @@ using ResultSet = std::vector<Id2DistVec>;
 
 class SearchJob : public Job {
  public:
-    SearchJob(JobId id, uint64_t topk, uint64_t nq, uint64_t nprobe, const float* vectors);
+    SearchJob(uint64_t topk, uint64_t nq, uint64_t nprobe, const float* vectors);
 
  public:
     bool