bootstrapping does not work properly using multiple DataFileDirectory
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Key: CASSANDRA-716
URL: https://issues.apache.org/jira/browse/CASSANDRA-716
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 0.4
Environment: storage-conf.xml:
<CommitLogDirectory>/home/store1/commitlog</CommitLogDirectory>
<DataFileDirectories>
<DataFileDirectory>/home/store0/data</DataFileDirectory>
<DataFileDirectory>/home/store1/data</DataFileDirectory>
</DataFileDirectories>
<CalloutLocation>/home/store1/cassandra/callouts</CalloutLocation>
<StagingFileDirectory>/home/store1/cassandra/staging</StagingFileDirectory>
Reporter: david.pan
I was adding a new machine A which has 2 DataFileDirectories into the ring. The
A will throw exception while bootstrapping.
DEBUG [MESSAGING-SERVICE-POOL:4] 2010-01-19 11:43:32,837
ContentStreamState.java (line 88) Removing stream context
/home/store0/data/pic/raw_data-tmp-1-Data.db:209833142
WARN [MESSAGING-SERVICE-POOL:4] 2010-01-19 11:43:32,837 TcpConnection.java
(line 484) Problem reading from socket connected to :
java.nio.channels.SocketChannel[connected local
=/10.81.37.65:7000 remote=/10.81.42.26:10418]
WARN [MESSAGING-SERVICE-POOL:4] 2010-01-19 11:43:32,837 TcpConnection.java
(line 485) Exception was generated at : 01/19/2010 11:43:32 on thread
MESSAGING-SERVICE-POOL:4
java.io.IOException: rename failed of /home/store0/data/pic/raw_data-1-Filter.db
java.io.IOError: java.io.IOException: rename failed of
/home/store0/data/pic/raw_data-1-Filter.db
at org.apache.cassandra.io.SSTableWriter.rename(SSTableWriter.java:154)
at
org.apache.cassandra.io.SSTableWriter.renameAndOpen(SSTableWriter.java:162)
at
org.apache.cassandra.io.Streaming$StreamCompletionHandler.onStreamCompletion(Streaming.java:284)
at
org.apache.cassandra.net.io.ContentStreamState.handleStreamCompletion(ContentStreamState.java:108)
at
org.apache.cassandra.net.io.ContentStreamState.read(ContentStreamState.java:90)
at org.apache.cassandra.net.io.TcpReader.read(TcpReader.java:96)
at
org.apache.cassandra.net.TcpConnection$ReadWorkItem.run(TcpConnection.java:445)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.IOException: rename failed of
/home/store0/data/pic/raw_data-1-Filter.db
at
org.apache.cassandra.utils.FBUtilities.renameWithConfirm(FBUtilities.java:306)
at org.apache.cassandra.io.SSTableWriter.rename(SSTableWriter.java:150)
... 9 more
I traced the exception and maybe found the reason.
StreamInitiateVerbHandler::doVerb() will create 3 temporary files(index,
filter, data) for each ssTable. The name for each file is generated by
getNewFileNameFromOldContextAndNames(). This method will generate a file name
and a path for each ssTable, but the path is generated with
DatabaseDescriptor.getDataFileLocationForTable() which will return different
path for ech call when we configure multi-DataFileDirectory.
eg: the ssTable raw_data-1 may have 3 temporary files :
/home/store0/data/pic/raw_data-tmp-1-Index.db
/home/store1/data/pic/raw_data-tmp-1-Filter.db
/home/store0/data/pic/raw_data-tmp-1-Data.db
After receiving all data, StreamCompletionHandler::onStreamCompletion() will
rename all temporary files and this method think all ssTable files will have
the same path as data.db file.
if (streamContext.getTargetFile().contains("-Data.db"))
{
......
try
{
SSTableReader sstable =
SSTableWriter.renameAndOpen(streamContext.getTargetFile());
......
}
......
}
Then the renameAndOpen() will throw that exception.
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