diff --git a/source/libs/index/src/index_fst.c b/source/libs/index/src/index_fst.c
index 3664bcfad0dc492a2383673f346b5605f5c02637..a6cabbd43940c91fb62afe9c65fc9dc4bb4139c3 100644
--- a/source/libs/index/src/index_fst.c
+++ b/source/libs/index/src/index_fst.c
@@ -235,6 +235,7 @@ void fstStateCompileForOneTrans(FstCountingWriter* w, CompiledAddr addr, FstTran
   FstState st = fstStateCreate(OneTrans);
 
   fstStateSetCommInput(&st, trn->inp);
+
   bool    null = false;
   uint8_t inp = fstStateCommInput(&st, &null);
   if (null == true) {
@@ -936,6 +937,7 @@ FstLastTransition* fstLastTransitionCreate(uint8_t inp, Output out) {
 }
 
 void fstLastTransitionDestroy(FstLastTransition* trn) { free(trn); }
+
 void fstBuilderNodeUnfinishedLastCompiled(FstBuilderNodeUnfinished* unNode, CompiledAddr addr) {
   FstLastTransition* trn = unNode->last;
   if (trn == NULL) {
diff --git a/source/libs/index/src/index_fst_automation.c b/source/libs/index/src/index_fst_automation.c
index 590ff294bf8f1841fc27e4519df1d23f668adcd5..ed1ad7a374286c8251dcb719be9a5510c6eec844 100644
--- a/source/libs/index/src/index_fst_automation.c
+++ b/source/libs/index/src/index_fst_automation.c
@@ -16,24 +16,24 @@
 #include "index_fst_automation.h"
 
 StartWithStateValue* startWithStateValueCreate(StartWithStateKind kind, ValueType ty, void* val) {
-  StartWithStateValue* nsv = calloc(1, sizeof(StartWithStateValue));
-  if (nsv == NULL) {
+  StartWithStateValue* sv = calloc(1, sizeof(StartWithStateValue));
+  if (sv == NULL) {
     return NULL;
   }
 
-  nsv->kind = kind;
-  nsv->type = ty;
+  sv->kind = kind;
+  sv->type = ty;
   if (ty == FST_INT) {
-    nsv->val = *(int*)val;
+    sv->val = *(int*)val;
   } else if (ty == FST_CHAR) {
     size_t len = strlen((char*)val);
-    nsv->ptr = (char*)calloc(1, len + 1);
-    memcpy(nsv->ptr, val, len);
+    sv->ptr = (char*)calloc(1, len + 1);
+    memcpy(sv->ptr, val, len);
   } else if (ty == FST_ARRAY) {
     // TODO,
     // nsv->arr = taosArrayFromList()
   }
-  return nsv;
+  return sv;
 }
 void startWithStateValueDestroy(void* val) {
   StartWithStateValue* sv = (StartWithStateValue*)val;
@@ -146,11 +146,9 @@ AutomationCtx* automCtxCreate(void* data, AutomationType atype) {
   if (atype == AUTOMATION_ALWAYS) {
     int val = 0;
     sv = startWithStateValueCreate(Running, FST_INT, &val);
-    ctx->stdata = (void*)sv;
   } else if (atype == AUTOMATION_PREFIX) {
     int val = 0;
     sv = startWithStateValueCreate(Running, FST_INT, &val);
-    ctx->stdata = (void*)sv;
   } else if (atype == AUTMMATION_MATCH) {
   } else {
     // add more search type
@@ -160,9 +158,8 @@ AutomationCtx* automCtxCreate(void* data, AutomationType atype) {
   if (data != NULL) {
     char*  src = (char*)data;
     size_t len = strlen(src);
-    dst = (char*)malloc(len * sizeof(char) + 1);
+    dst = (char*)calloc(1, len * sizeof(char) + 1);
     memcpy(dst, src, len);
-    dst[len] = 0;
   }
 
   ctx->data = dst;
diff --git a/source/libs/index/test/fstUT.cc b/source/libs/index/test/fstUT.cc
index d10f5f47b8d5e0b4980efacb78e0fd5271a187b2..536f7c1a4c8b7fdcc26a68369a0153bdbb5703d7 100644
--- a/source/libs/index/test/fstUT.cc
+++ b/source/libs/index/test/fstUT.cc
@@ -99,6 +99,7 @@ class FstReadMemory {
     fstSliceDestroy(&skey);
     return ok;
   }
+
   bool GetWithTimeCostUs(const std::string& key, uint64_t* val, uint64_t* elapse) {
     int64_t s = taosGetTimestampUs();
     bool    ok = this->Get(key, val);
@@ -120,8 +121,6 @@ class FstReadMemory {
       printf("key: %s, val: %" PRIu64 "\n", key.c_str(), (uint64_t)(rt->out.out));
       swsResultDestroy(rt);
     }
-    for (size_t i = 0; i < result.size(); i++) {
-    }
     std::cout << std::endl;
     return true;
   }
@@ -137,7 +136,7 @@ class FstReadMemory {
     fstDestroy(_fst);
     fstSliceDestroy(&_s);
     writerCtxDestroy(_wc, false);
-    tfCleanup();
+    // tfCleanup();
   }
 
  private:
@@ -196,6 +195,10 @@ class TFst {
     }
     return fr->Get(k, v);
   }
+  bool Search(AutomationCtx* ctx, std::vector<uint64_t>& result) {
+    // add more
+    return fr->Search(ctx, result);
+  }
 
  private:
   FstWriter*     fw;
@@ -229,5 +232,9 @@ TEST_F(FstEnv, writeNormal) {
   assert(fst->Get("a", &val) == false);
   assert(fst->Get("aa", &val) == true);
   assert(val == 0);
+
+  std::vector<uint64_t> rlt;
+  AutomationCtx*        ctx = automCtxCreate((void*)"ab", AUTOMATION_ALWAYS);
+  assert(fst->Search(ctx, rlt) == true);
 }
-TEST_F(FstEnv, writeExcpet) {}
+TEST_F(FstEnv, WriteMillonrRecord) {}