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Check a status in InstallOutputBlobFiles and Rewrite BatchWriteNewIndices #243

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The issue is here #238.
I push 3 commits.
One is add a status check.
One is change the void BatchWriteNewIndices(BlobFileBuilder::OutContexts& contexts, Status* s) to Status BatchWriteNewIndices(BlobFileBuilder::OutContexts& contexts)
One is delete MergeBlobIndex if we just don't use it when gc_merge_rewrite_ = false.

If you want, I can squash the 3 commit into 1 commit.

Signed-off-by: Wang Haitao <wanghaitao.ouyang@foxmail.com>
to have the same interface

Signed-off-by: Wang Haitao <wanghaitao.ouyang@foxmail.com>
Signed-off-by: Wang Haitao <wanghaitao.ouyang@foxmail.com>
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@Connor1996 Connor1996 left a comment

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sorry for the late review

std::string index_entry;
BlobIndex original_index = ctx->original_blob_index;
ParsedInternalKey ikey;
if (!ParseInternalKey(ctx->key, &ikey)) {
*s = Status::Corruption(Slice());
return;
return Status::Corruption(Slice());;
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add a meaning error message

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Ok, I'll add one

}
if (!gc_merge_rewrite_) {
merge_blob_index.EncodeToBase(&index_entry);
const BlobIndex &index = ctx->new_blob_index;
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why is it different from before?

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Because the merge blob index is only used in the second if branch. I just think we should only declare the merge blob index when we truly use it. This will help others understand the code easily.

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2 participants