Yi Wu c7a45ca91f BlobDB: handle IO error on write (#4580)
Summary:
A fix similar to #4410 but on the write path. On IO error on `SelectBlobFile()` we didn't return error code properly, but simply a nullptr of `BlobFile`. The `AppendBlob()` method didn't have null check for the pointer and caused crash. The fix make sure we properly return error code in this case.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4580

Differential Revision: D10513849

Pulled By: yiwu-arbug

fbshipit-source-id: 80bca920d1d7a3541149de981015ad83e0aa14b5
2018-10-23 15:03:45 -07:00
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