fix(pendingWrites): don't skip the pending entries with version=0 #1721
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Addresses https://discuss.dgraph.io/t/bug-iterator-inside-a-transaction/14794/2
With the introduction of
SinceTs
, a bug was introduced #1653 that skips the pending entries.The default value of SinceTs is zero. And for the transaction made at readTs 0, the pending entries have version set to 0. So they were also getting skipped.
This change is