[td-13039] refactor.

source/libs/executor/inc/executorimpl.h

@@ -233,7 +233,7 @@ typedef struct STaskAttr {
   SArray*         pUdfInfo;  // no need to free
 } STaskAttr;
 
-typedef int32_t (*__optr_prepare_fn_t)(void* param);
+typedef int32_t (*__optr_open_fn_t)(void* param);
 typedef SSDataBlock* (*__operator_fn_t)(void* param, bool* newgroup);
 typedef void (*__optr_cleanup_fn_t)(void* param, int32_t num);
 
@@ -318,7 +318,7 @@ typedef struct SOperatorInfo {
 
   struct SOperatorInfo** pDownstream;      // downstram pointer list
   int32_t                numOfDownstream;  // number of downstream. The value is always ONE expect for join operator
-  __optr_prepare_fn_t    prepareFn;
+  __optr_open_fn_t    prepareFn;
   __operator_fn_t        exec;
   __optr_cleanup_fn_t    cleanupFn;
 } SOperatorInfo;

source/libs/executor/src/tlinearhash.c

@@ -29,8 +29,8 @@ typedef struct SLHashBucket {
 typedef struct SLHashObj {
   SDiskbasedBuf *pBuf;
   _hash_fn_t     hashFn;
-  int32_t        tuplesPerPage;
   SLHashBucket **pBucket;         // entry list
+  int32_t        tuplesPerPage;
   int32_t        numOfAlloc;      // number of allocated bucket ptr slot
   int32_t        bits;            // the number of bits used in hash
   int32_t        numOfBuckets;    // the number of buckets
@@ -142,7 +142,7 @@ static void doRemoveFromBucket(SFilePage* pPage, SLHashNode* pNode, SLHashBucket
   pBucket->size -= 1;
 }
 
-static void doCompressBucketPages(SLHashObj *pHashObj, SLHashBucket* pBucket) {
+static void doTrimBucketPages(SLHashObj *pHashObj, SLHashBucket* pBucket) {
   size_t numOfPages = taosArrayGetSize(pBucket->pPageIdList);
   if (numOfPages <= 1) {
     return;
@@ -253,6 +253,7 @@ SLHashObj* tHashInit(int32_t inMemPages, int32_t pageSize, _hash_fn_t fn, int32_
     return NULL;
   }
 
+  // disable compress when flushing to disk
   setBufPageCompressOnDisk(pHashObj->pBuf, false);
 
   /**
@@ -367,7 +368,7 @@ int32_t tHashPut(SLHashObj* pHashObj, const void *key, size_t keyLen, void *data
       releaseBufPage(pHashObj->pBuf, p);
     }
 
-    doCompressBucketPages(pHashObj, pBucket);
+    doTrimBucketPages(pHashObj, pBucket);
   }
 
   return TSDB_CODE_SUCCESS;