Blake Eggleston created CASSANDRA-14803:
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Summary: Rows that cross index block boundaries can cause
incomplete reverse reads in some cases.
Key: CASSANDRA-14803
URL: https://issues.apache.org/jira/browse/CASSANDRA-14803
Project: Cassandra
Issue Type: Bug
Reporter: Blake Eggleston
Assignee: Blake Eggleston
Fix For: 3.0.x, 3.11.x
When we're reading 2.1 sstables in reverse, we skip the first row of an index
block if it's split across index boundaries. The entire row will be read at the
end of the next block. In some cases though, the only thing in this index block
is the partial row, so we return an empty iterator. The empty iterator is then
interpreted as the end of the row further down the call stack, so we return
early without reading the rest of the data. This only affects 3.x during
upgrades from 2.1
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