Fix "Unable to create hard link" SSTableReaderTest error messages
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Key: CASSANDRA-3735
URL: https://issues.apache.org/jira/browse/CASSANDRA-3735
Project: Cassandra
Issue Type: Bug
Reporter: Jonathan Ellis
Priority: Minor
Sample failure (on Windows):
{noformat}
[junit] java.io.IOException: Exception while executing the command: cmd /c
mklink /H
C:\Users\Jonathan\projects\cassandra\git\build\test\cassandra\data\Keyspace1\backups\Standard1-hc-1-Index.db
c:\Users\Jonathan\projects\cassandra\git\build\test\cassandra\data\Keyspace1\Standard1-hc-1-Index.db,command
error Code: 1, command output: Cannot create a file when that file already
exists.
[junit]
[junit] at org.apache.cassandra.utils.CLibrary.exec(CLibrary.java:213)
[junit] at
org.apache.cassandra.utils.CLibrary.createHardLinkWithExec(CLibrary.java:188)
[junit] at
org.apache.cassandra.utils.CLibrary.createHardLink(CLibrary.java:151)
[junit] at
org.apache.cassandra.io.sstable.SSTableReader.createLinks(SSTableReader.java:833)
[junit] at
org.apache.cassandra.db.DataTracker$1.runMayThrow(DataTracker.java:161)
[junit] at
org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
[junit] at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
[junit] at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
[junit] at java.util.concurrent.FutureTask.run(FutureTask.java:138)
[junit] at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
[junit] at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
[junit] at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
[junit] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
[junit] at java.lang.Thread.run(Thread.java:662)
[junit] ERROR 17:10:17,111 Fatal exception in thread
Thread[NonPeriodicTasks:1,5,main]
{noformat}
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