Hi! I've found that in all cases, the errors happened when running the tests cases of the application. Before running each tests case, a "test keyspace" is created, then the tests are executed, and the keyspace is removed.
The repeated "creation, use and removal" of a keyspace causes that kind of errors, but the tests ran ok... that errors are not "propagated" to the application... Thanks! Horacio On Mon, Jun 4, 2012 at 3:50 PM, aaron morton <aa...@thelastpickle.com>wrote: > I remember someone have the "file exists" issue a few weeks ago, IIRC it > magically went away. > > Do yo have steps to reproduce this fault ? If you can reproduce it on a > release version please create a ticket on > https://issues.apache.org/jira/browse/CASSANDRA and update the email > thread. > > Cheers > > ----------------- > Aaron Morton > Freelance Developer > @aaronmorton > http://www.thelastpickle.com > > On 3/06/2012, at 2:56 PM, Horacio G. de Oro wrote: > > Permissions are ok. The writes works ok, and the data can be read. > > Thanks! > Horacio > > > > On Sat, Jun 2, 2012 at 11:50 PM, Kirk True <k...@mustardgrain.com> wrote: > >> Permissions problems on /var for the user running Cassandra? >> >> Sent from my iPhone >> >> On Jun 2, 2012, at 6:56 PM, "Horacio G. de Oro" <hgde...@gmail.com> >> wrote: >> >> > Hi! While using Cassandra, I've seen this log messages when running >> some test cases (which insert lots of columns in 4 rows). >> > I've tryied Cassandra 1.0.10, 1.1.0, 1.1.1-SNAPSHOT and 1.2.0-SNAPSHOT >> (built from git). I'm using the default configuration, Oracle jdk 1.6.0_32, >> Ubuntu 12.04 and pycassa. >> > >> > Since I'm very new to Cassandra (I'm just starting to learn it) I don't >> know if I'm doing something wrong, or maybe there are some bugs in the >> several versions of Cassandra I've tested. >> > >> > cassandra-1.0.10 >> > >> > - IOException: unable to mkdirs >> > >> > cassandra-1.1.0 >> > >> > - IOException: Unable to create directory >> > >> > cassandra-1.1.1-SNAPSHOT >> > >> > - IOException: Unable to create directory >> > >> > cassandra-1.2.0-SNAPSHOT >> > >> > - IOException: Unable to create directory >> > >> > - CLibrary.java (line 191) Unable to create hard link (...) >> > command output: ln: failed to create hard link >> `(...)/lolog_tests-Logs_by_app-ia-3-Summary.db': File exists >> > >> > >> > >> > Thanks in advance! >> > Horacio >> > >> > >> > ------------------------------------------------------------ >> > system-cassandra-1.0.10.log >> > ------------------------------------------------------------ >> > >> > ERROR [MutationStage:1] 2012-06-02 20:37:41,115 >> AbstractCassandraDaemon.java (line 139) Fatal exception in thread >> Thread[MutationStage:1,5,main] >> > java.io.IOError: java.io.IOException: unable to mkdirs >> /var/lib/cassandra/data/lolog_tests/snapshots/1338680261112-Logs_by_app >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1433) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1462) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.truncate(ColumnFamilyStore.java:1657) >> > at >> org.apache.cassandra.db.TruncateVerbHandler.doVerb(TruncateVerbHandler.java:50) >> > >> > ERROR [MutationStage:11] 2012-06-02 20:37:55,730 >> AbstractCassandraDaemon.java (line 139) Fatal exception in thread >> Thread[MutationStage:11,5,main] >> > java.io.IOError: java.io.IOException: unable to mkdirs >> /var/lib/cassandra/data/lolog_tests/snapshots/1338680275729-Logs_by_app >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1433) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1462) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.truncate(ColumnFamilyStore.java:1657) >> > at >> org.apache.cassandra.db.TruncateVerbHandler.doVerb(TruncateVerbHandler.java:50) >> > >> > ERROR [MutationStage:19] 2012-06-02 20:37:57,395 >> AbstractCassandraDaemon.java (line 139) Fatal exception in thread >> Thread[MutationStage:19,5,main] >> > java.io.IOError: java.io.IOException: unable to mkdirs >> /var/lib/cassandra/data/lolog_tests/snapshots/1338680277394-Logs_by_app >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1433) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1462) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.truncate(ColumnFamilyStore.java:1657) >> > at >> org.apache.cassandra.db.TruncateVerbHandler.doVerb(TruncateVerbHandler.java:50) >> > >> > ERROR [MutationStage:20] 2012-06-02 20:41:26,666 >> AbstractCassandraDaemon.java (line 139) Fatal exception in thread >> Thread[MutationStage:20,5,main] >> > java.io.IOError: java.io.IOException: unable to mkdirs >> /var/lib/cassandra/data/lolog_tests/snapshots/1338680486666-Logs_by_app >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1433) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1462) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.truncate(ColumnFamilyStore.java:1657) >> > at >> org.apache.cassandra.db.TruncateVerbHandler.doVerb(TruncateVerbHandler.java:50) >> > >> > ------------------------------------------------------------ >> > system-cassandra-1.1.0.log >> > ------------------------------------------------------------ >> > >> > ERROR [MutationStage:1] 2012-06-02 20:45:15,609 >> AbstractCassandraDaemon.java (line 134) Exception in thread >> Thread[MutationStage:1,5,main] >> > java.io.IOError: java.io.IOException: Unable to create directory >> /var/lib/cassandra/data/lolog_tests/Logs_by_app/snapshots/1338680715606-Logs_by_app >> > at >> org.apache.cassandra.db.Directories.getOrCreate(Directories.java:384) >> > at >> org.apache.cassandra.db.Directories.getSnapshotDirectory(Directories.java:186) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1440) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1483) >> > >> > >> > ERROR [MutationStage:9] 2012-06-02 20:45:30,728 >> AbstractCassandraDaemon.java (line 134) Exception in thread >> Thread[MutationStage:9,5,main] >> > java.io.IOError: java.io.IOException: Unable to create directory >> /var/lib/cassandra/data/lolog_tests/Logs_by_app/snapshots/1338680730727-Logs_by_app >> > at >> org.apache.cassandra.db.Directories.getOrCreate(Directories.java:384) >> > at >> org.apache.cassandra.db.Directories.getSnapshotDirectory(Directories.java:186) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1440) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1483) >> > >> > >> > ERROR [MutationStage:17] 2012-06-02 20:45:31,967 >> AbstractCassandraDaemon.java (line 134) Exception in thread >> Thread[MutationStage:17,5,main] >> > java.io.IOError: java.io.IOException: Unable to create directory >> /var/lib/cassandra/data/lolog_tests/Logs_by_app/snapshots/1338680731966-Logs_by_app >> > at >> org.apache.cassandra.db.Directories.getOrCreate(Directories.java:384) >> > at >> org.apache.cassandra.db.Directories.getSnapshotDirectory(Directories.java:186) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1440) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1483) >> > >> > ------------------------------------------------------------ >> > system-cassandra-1.1.1-SNAPSHOT.log >> > ------------------------------------------------------------ >> > >> > ERROR [MutationStage:4] 2012-06-02 22:19:55,821 >> AbstractCassandraDaemon.java (line 134) Exception in thread >> Thread[MutationStage:4,5,main] >> > java.io.IOError: java.io.IOException: Unable to create directory >> /var/lib/cassandra/data/lolog_tests/Logs_by_app/snapshots/1338686395804-Logs_by_app >> > at >> org.apache.cassandra.db.Directories.getOrCreate(Directories.java:386) >> > at >> org.apache.cassandra.db.Directories.getSnapshotDirectory(Directories.java:173) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1488) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1540) >> > >> > ERROR [MutationStage:9] 2012-06-02 22:20:07,892 >> AbstractCassandraDaemon.java (line 134) Exception in thread >> Thread[MutationStage:9,5,main] >> > java.io.IOError: java.io.IOException: Unable to create directory >> /var/lib/cassandra/data/lolog_tests/Logs_by_app/snapshots/1338686407891-Logs_by_app >> > at >> org.apache.cassandra.db.Directories.getOrCreate(Directories.java:386) >> > at >> org.apache.cassandra.db.Directories.getSnapshotDirectory(Directories.java:173) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1488) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1540) >> > >> > ------------------------------------------------------------ >> > system-cassandra-1.2.0-SNAPSHOT.log >> > ------------------------------------------------------------ >> > >> > ERROR [MutationStage:3] 2012-06-02 20:47:23,371 >> AbstractCassandraDaemon.java (line 133) Exception in thread >> Thread[MutationStage:3,5,main] >> > java.io.IOError: java.io.IOException: Unable to create directory >> /var/lib/cassandra/data/lolog_tests/Logs_by_app/snapshots/1338680843363-Logs_by_app >> > at >> org.apache.cassandra.db.Directories.getOrCreate(Directories.java:386) >> > at >> org.apache.cassandra.db.Directories.getSnapshotDirectory(Directories.java:173) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1472) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1524) >> > >> > ERROR [MutationStage:20] 2012-06-02 20:47:40,361 CLibrary.java (line >> 191) Unable to create hard link >> > java.io.IOException: Exception while executing the command: ln >> /var/lib/cassandra/data/lolog_tests/Logs_by_app/lolog_tests-Logs_by_app-ia-3-Summary.db >> /var/lib/cassandra/data/lolog_tests/Logs_by_app/snapshots/1338680860345-Logs_by_app/lolog_tests-Logs_by_app-ia-3-Summary.db, >> command error Code: 1, command output: ln: failed to create hard link >> `/var/lib/cassandra/data/lolog_tests/Logs_by_app/snapshots/1338680860345-Logs_by_app/lolog_tests-Logs_by_app-ia-3-Summary.db': >> File exists >> > >> > at >> org.apache.cassandra.utils.FBUtilities.exec(FBUtilities.java:561) >> > at >> org.apache.cassandra.utils.CLibrary.createHardLinkWithExec(CLibrary.java:187) >> > at >> org.apache.cassandra.utils.CLibrary.createHardLink(CLibrary.java:150) >> > >> > ERROR [MutationStage:20] 2012-06-02 20:47:40,364 >> AbstractCassandraDaemon.java (line 133) Exception in thread >> Thread[MutationStage:20,5,main] >> > java.io.IOError: java.io.IOException: Exception while executing the >> command: ln >> /var/lib/cassandra/data/lolog_tests/Logs_by_app/lolog_tests-Logs_by_app-ia-3-Summary.db >> /var/lib/cassandra/data/lolog_tests/Logs_by_app/snapshots/1338680860345-Logs_by_app/lolog_tests-Logs_by_app-ia-3-Summary.db, >> command error Code: 1, command output: ln: failed to create hard link >> `/var/lib/cassandra/data/lolog_tests/Logs_by_app/snapshots/1338680860345-Logs_by_app/lolog_tests-Logs_by_app-ia-3-Summary.db': >> File exists >> > >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1486) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1524) >> > at >> org.apache.cassandra.db.ColumnFamilyStore.truncate(ColumnFamilyStore.java:1761) >> > >> > >> > >> > > >
