Simon Zhou created CASSANDRA-13106:
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Summary: Unnecessary assert
Key: CASSANDRA-13106
URL: https://issues.apache.org/jira/browse/CASSANDRA-13106
Project: Cassandra
Issue Type: Improvement
Reporter: Simon Zhou
Assignee: Simon Zhou
Priority: Minor
Attachments: 0001-Remove-unnecessary-assertion.patch
We had over 70 thousand sstables and it's slow to bootstrap new node, even
though the CPU utilization for main thread of Cassandra was nearly 100%. So we
took a few stack traces and found that the main thread were busy running this
line in Tracker.java:
{code}
assert Iterables.all(removed, remove);
{code}
Not exactly sure whether this line causes CPU utilization/bootstrapping issue,
but this line is redundant because the Predict we pass in is
Predicates.<SSTableReader>alwaysTrue(), which means the assertion always
returns true. So I propose to remove that line.
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