Isaac Reath created CASSANDRA-20819:
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Summary: ThreadLocalReadAheadBufferTest fails with FileNotFound
exception when -Djava.io.tmpdir set to /tmp
Key: CASSANDRA-20819
URL: https://issues.apache.org/jira/browse/CASSANDRA-20819
Project: Apache Cassandra
Issue Type: Bug
Components: Test/unit
Reporter: Isaac Reath
Assignee: Isaac Reath
When running ThreadLocalReadAheadBufferTest, I found that the test will fail
with the following error if -[Djava.io|http://djava.io/].tmpdir is set to any
directory without a trailing slash whose parent is not writable (e.g. /tmp).
This happens because when we construct the path, we simply just append tmpdir
to the filename
([https://github.com/apache/cassandra/blob/trunk/test/unit/org/apache/cassandra/io/util/ThreadLocalReadAheadBufferTest.java#L180]).
This produces the following error:
{code:java}
java.lang.RuntimeException: java.io.FileNotFoundException:
/tmpdata+90912743.bin (Read-only file system)
at
org.apache.cassandra.io.util.ThreadLocalReadAheadBufferTest.writeFile(ThreadLocalReadAheadBufferTest.java:200)
at
org.apache.cassandra.io.util.ThreadLocalReadAheadBufferTest.setup(ThreadLocalR...
{code}
By switching to using a File(parent, filename) constructor we can support both
with and without a trailing slash.
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