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Merge pull request #7478 from taosdata/enhance/TD-6233 

[TD-6233]<enhance>: make column compression threshold user configurable
This commit is contained in:
dapan1121 2021-08-20 18:44:40 +08:00 committed by GitHub
parent 80aa65dd56 9cd910b96f
commit 8cd5a3d81f
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 21 additions and 17 deletions
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7
src/client/src/tscServer.c
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@ -2678,7 +2678,7 @@ int tscProcessQueryRsp(SSqlObj *pSql) {
return 0;
}
static void decompressQueryColData(SSqlRes *pRes, SQueryInfo* pQueryInfo, char **data, int8_t compressed, int compLen) {
static void decompressQueryColData(SSqlObj *pSql, SSqlRes *pRes, SQueryInfo* pQueryInfo, char **data, int8_t compressed, int32_t compLen) {
int32_t decompLen = 0;
int32_t numOfCols = pQueryInfo->fieldsInfo.numOfOutput;
int32_t *compSizes;
@ -2715,6 +2715,9 @@ static void decompressQueryColData(SSqlRes *pRes, SQueryInfo* pQueryInfo, char *
pData = *data + compLen + numOfCols * sizeof(int32_t);
}
tscDebug("0x%"PRIx64" decompress col data, compressed size:%d, decompressed size:%d",
pSql->self, (int32_t)(compLen + numOfCols * sizeof(int32_t)), decompLen);
int32_t tailLen = pRes->rspLen - sizeof(SRetrieveTableRsp) - decompLen;
memmove(*data + decompLen, pData, tailLen);
memmove(*data, outputBuf, decompLen);
@ -2749,7 +2752,7 @@ int tscProcessRetrieveRspFromNode(SSqlObj *pSql) {
//Decompress col data if compressed from server
if (pRetrieve->compressed) {
int32_t compLen = htonl(pRetrieve->compLen);
decompressQueryColData(pRes, pQueryInfo, &pRes->data, pRetrieve->compressed, compLen);
decompressQueryColData(pSql, pRes, pQueryInfo, &pRes->data, pRetrieve->compressed, compLen);
}
STableMetaInfo *pTableMetaInfo = tscGetMetaInfo(pQueryInfo, 0);

17
src/common/src/tglobal.c
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@ -76,12 +76,11 @@ int32_t tsMaxBinaryDisplayWidth = 30;
int32_t tsCompressMsgSize = -1;
/* denote if server needs to compress the retrieved column data before adding to the rpc response message body.
* 0: disable column data compression
* 1: enable column data compression
* This option is default to disabled. Once enabled, compression will be conducted if any column has size more
* than QUERY_COMP_THRESHOLD. Otherwise, no further compression is needed.
* 0: all data are compressed
* -1: all data are not compressed
* other values: if any retrieved column size is greater than the tsCompressColData, all data will be compressed.
*/
int32_t tsCompressColData = 0;
int32_t tsCompressColData = -1;
// client
int32_t tsMaxSQLStringLen = TSDB_MAX_ALLOWED_SQL_LEN;
@ -1007,10 +1006,10 @@ static void doInitGlobalConfig(void) {
cfg.option = "compressColData";
cfg.ptr = &tsCompressColData;
cfg.valType = TAOS_CFG_VTYPE_INT8;
cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW;
cfg.minValue = 0;
cfg.maxValue = 1;
cfg.valType = TAOS_CFG_VTYPE_INT32;
cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_CLIENT | TSDB_CFG_CTYPE_B_SHOW;
cfg.minValue = -1;
cfg.maxValue = 100000000.0f;
cfg.ptrLength = 0;
cfg.unitType = TAOS_CFG_UTYPE_NONE;
taosInitConfigOption(cfg);

4
src/query/inc/qExecutor.h
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@ -43,9 +43,7 @@ typedef int32_t (*__block_search_fn_t)(char* data, int32_t num, int64_t key, int
#define GET_NUM_OF_RESULTS(_r) (((_r)->outputBuf) == NULL? 0:((_r)->outputBuf)->info.rows)
//TODO: may need to fine tune this threshold
#define QUERY_COMP_THRESHOLD (1024 * 512)
#define NEEDTO_COMPRESS_QUERY(size) ((size) > QUERY_COMP_THRESHOLD ? 1 : 0)
#define NEEDTO_COMPRESS_QUERY(size) ((size) > tsCompressColData? 1 : 0)
enum {
// when query starts to execute, this status will set

8
src/query/src/queryMain.c
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@ -357,7 +357,7 @@ int32_t qDumpRetrieveResult(qinfo_t qinfo, SRetrieveTableRsp **pRsp, int32_t *co
}
(*pRsp)->precision = htons(pQueryAttr->precision);
(*pRsp)->compressed = (int8_t)(tsCompressColData && checkNeedToCompressQueryCol(pQInfo));
(*pRsp)->compressed = (int8_t)((tsCompressColData != -1) && checkNeedToCompressQueryCol(pQInfo));
if (GET_NUM_OF_RESULTS(&(pQInfo->runtimeEnv)) > 0 && pQInfo->code == TSDB_CODE_SUCCESS) {
doDumpQueryResult(pQInfo, (*pRsp)->data, (*pRsp)->compressed, &compLen);
@ -367,8 +367,12 @@ int32_t qDumpRetrieveResult(qinfo_t qinfo, SRetrieveTableRsp **pRsp, int32_t *co
if ((*pRsp)->compressed && compLen != 0) {
int32_t numOfCols = pQueryAttr->pExpr2 ? pQueryAttr->numOfExpr2 : pQueryAttr->numOfOutput;
*contLen = *contLen - pQueryAttr->resultRowSize * s + compLen + numOfCols * sizeof(int32_t);
int32_t origSize = pQueryAttr->resultRowSize * s;
int32_t compSize = compLen + numOfCols * sizeof(int32_t);
*contLen = *contLen - origSize + compSize;
*pRsp = (SRetrieveTableRsp *)rpcReallocCont(*pRsp, *contLen);
qDebug("QInfo:0x%"PRIx64" compress col data, uncompressed size:%d, compressed size:%d, ratio:%.2f",
pQInfo->qId, origSize, compSize, (float)origSize / (float)compSize);
}
(*pRsp)->compLen = htonl(compLen);