Automatic merge from submit-queue (batch tested with PRs 51480, 49616, 50123, 50846, 50404)

getHashEquivalencePod should return if equivalence pod is found
Signed-off-by: sakeven <jc5930@sina.cn>



**What this PR does / why we need it**:

getHashEquivalencePod should return if equivalence pod is found, rather than simply check equivalenceHash equals to 0 later.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```
NONE
```