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)
