fix: close and persistence

jina-ai / executor-elasticsearch-indexer

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fix: close and persistence #12

Open AnneYang720 opened 2 years ago

AnneYang720 commented 2 years ago

This PR will fix the close() function and test_persistence for ElasticSearch indexer. The test_persistence before is partly skipped by right len but empty content.

[x] add sync to close()
[x] fix test_persistence