8474f8a01c
Today it's possible to encounter an Index operation in Lucene whose _source is disabled, and _recovery_source was pruned by the MergePolicy. If it's the case, we create a Translog#Index without source and let the caller validate it later. However, this approach is challenging for the caller. Deletes and No-Ops don't allow invoking "source()" method. The caller has to make sure to call "source()" only on index operations. The current implementation in CCR does not follow this and fail to replica deletes or no-ops. Moreover, it's easier to reason if a Translog#Index always has the source. |
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