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fix: adjust weight of mnode while balance

This commit is contained in:
Shengliang Guan 2022-12-28 20:09:02 +08:00
parent c9b81efc47
commit cc29662bf9
1 changed files with 13 additions and 12 deletions
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25
source/dnode/mnode/impl/src/mndVgroup.c
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@ -480,13 +480,14 @@ SArray *mndBuildDnodesArray(SMnode *pMnode, int32_t exceptDnodeId) {
static int32_t mndCompareDnodeId(int32_t *dnode1Id, int32_t *dnode2Id) { return *dnode1Id >= *dnode2Id ? 1 : 0; }
static float mndGetDnodeScore(SDnodeObj *pDnode) {
return ((float)pDnode->numOfVnodes + (float)pDnode->numOfOtherNodes * 0.9) / pDnode->numOfSupportVnodes;
static float mndGetDnodeScore(SDnodeObj *pDnode, int32_t additionDnodes, float ratio) {
float totalDnodes = pDnode->numOfVnodes + (float)pDnode->numOfOtherNodes * ratio + additionDnodes;
return totalDnodes / pDnode->numOfSupportVnodes;
}
static int32_t mndCompareDnodeVnodes(SDnodeObj *pDnode1, SDnodeObj *pDnode2) {
float d1Score = mndGetDnodeScore(pDnode1);
float d2Score = mndGetDnodeScore(pDnode2);
float d1Score = mndGetDnodeScore(pDnode1, 0, 0.9);
float d2Score = mndGetDnodeScore(pDnode2, 0, 0.9);
return d1Score >= d2Score ? 1 : 0;
}
@ -509,7 +510,7 @@ static int32_t mndGetAvailableDnode(SMnode *pMnode, SDbObj *pDb, SVgObj *pVgroup
taosArraySort(pArray, (__compar_fn_t)mndCompareDnodeVnodes);
for (int32_t i = 0; i < (int32_t)taosArrayGetSize(pArray); ++i) {
SDnodeObj *pDnode = taosArrayGet(pArray, i);
mDebug("dnode:%d, score:%f", pDnode->id, mndGetDnodeScore(pDnode));
mDebug("dnode:%d, score:%f", pDnode->id, mndGetDnodeScore(pDnode, 0, 0.9));
}
int32_t size = taosArrayGetSize(pArray);
@ -891,7 +892,7 @@ static int32_t mndAddVnodeToVgroup(SMnode *pMnode, STrans *pTrans, SVgObj *pVgro
taosArraySort(pArray, (__compar_fn_t)mndCompareDnodeVnodes);
for (int32_t i = 0; i < taosArrayGetSize(pArray); ++i) {
SDnodeObj *pDnode = taosArrayGet(pArray, i);
mInfo("dnode:%d, equivalent vnodes:%d", pDnode->id, pDnode->numOfVnodes);
mInfo("dnode:%d, equivalent vnodes:%d others:%d", pDnode->id, pDnode->numOfVnodes, pDnode->numOfOtherNodes);
}
SVnodeGid *pVgid = &pVgroup->vnodeGid[pVgroup->replica];
@ -951,7 +952,7 @@ static int32_t mndRemoveVnodeFromVgroup(SMnode *pMnode, STrans *pTrans, SVgObj *
taosArraySort(pArray, (__compar_fn_t)mndCompareDnodeVnodes);
for (int32_t i = 0; i < taosArrayGetSize(pArray); ++i) {
SDnodeObj *pDnode = taosArrayGet(pArray, i);
mInfo("dnode:%d, equivalent vnodes:%d", pDnode->id, pDnode->numOfVnodes);
mInfo("dnode:%d, equivalent vnodes:%d others:%d", pDnode->id, pDnode->numOfVnodes, pDnode->numOfOtherNodes);
}
int32_t code = -1;
@ -1986,16 +1987,16 @@ static int32_t mndBalanceVgroup(SMnode *pMnode, SRpcMsg *pReq, SArray *pArray) {
taosArraySort(pArray, (__compar_fn_t)mndCompareDnodeVnodes);
for (int32_t i = 0; i < taosArrayGetSize(pArray); ++i) {
SDnodeObj *pDnode = taosArrayGet(pArray, i);
mInfo("dnode:%d, equivalent vnodes:%d support:%d, score:%f", pDnode->id, pDnode->numOfVnodes,
pDnode->numOfSupportVnodes, (float)pDnode->numOfVnodes / pDnode->numOfSupportVnodes);
mInfo("dnode:%d, equivalent vnodes:%d others:%d support:%d, score:%f", pDnode->id, pDnode->numOfVnodes,
pDnode->numOfSupportVnodes, pDnode->numOfOtherNodes, mndGetDnodeScore(pDnode, 0, 1));
}
SDnodeObj *pSrc = taosArrayGet(pArray, taosArrayGetSize(pArray) - 1);
SDnodeObj *pDst = taosArrayGet(pArray, 0);
float srcScore = (float)(pSrc->numOfVnodes - 1) / pSrc->numOfSupportVnodes;
float dstScore = (float)(pDst->numOfVnodes + 1) / pDst->numOfSupportVnodes;
mInfo("trans:%d, after balance, src dnode:%d score:%f, dst dnode:%d score:%f", pTrans->id, pSrc->id, srcScore,
float srcScore = mndGetDnodeScore(pSrc, -1, 1);
float dstScore = mndGetDnodeScore(pDst, 1, 1);
mInfo("trans:%d, after balance, src dnode:%d score:%f, dst dnode:%d score:%f", pTrans->id, pSrc->id, dstScore,
pDst->id, dstScore);
if (srcScore > dstScore - 0.000001) {