Sean Busbey created ACCUMULO-1892:
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Summary: examples.simple.RandomBatchWriter might not write the
specified number of rowids
Key: ACCUMULO-1892
URL: https://issues.apache.org/jira/browse/ACCUMULO-1892
Project: Accumulo
Issue Type: Bug
Components: docs, test
Affects Versions: 1.5.0, 1.4.4, 1.4.3, 1.4.2, 1.4.1, 1.4.0
Reporter: Sean Busbey
Assignee: Sean Busbey
Priority: Minor
Fix For: 1.4.5, 1.5.1, 1.6.0
examples.simple.RandomBatchWriter takes a command line arg for how many rowids
to write.
In the functional tests, this arg is used to coordinate a number of expected
reads with teh examples.simple.RandomBatchReader example.
the reader implementation ensures that it generates the passed number of query
rows, but the write just makes num attempts at creating random rowids.
For a small number of goal rows and a large range (like the examples used for
testing bloom filter speeds early in the examples integration test), this works
fine.
For a larger number of goal rows (like the examples used to just write/read 10k
rows later in the examples integration test), collisions in the selected row
ids will cause the writer to actually generate fewer than the expected number.
That, in turn, will cause the attempted read integration test to fail.
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