You appear to have multiple java binaries in your path. That needs to be resolved.
sent from my mobile Daemeon C.M. Reiydelle USA 415.501.0198 London +44.0.20.8144.9872 On Apr 5, 2015 1:40 AM, "Jean Tremblay" <jean.tremb...@zen-innovations.com> wrote: > Hi, > I have a cluster of 5 nodes. We use cassandra 2.1.3. > > The 5 nodes use about 50-57% of the 1T SSD. > One node managed to compact all its data. During one compaction this node > used almost 100% of the drive. The other nodes refuse to continue > compaction claiming that there is not enough disk space. > > From the documentation LeveledCompactionStrategy should be able to > compact my data, well at least this is what I understand. > > <<Size-tiered compaction requires at least as much free disk space for > compaction as the size of the largest column family. Leveled compaction > needs much less space for compaction, only 10 * sstable_size_in_mb. > However, even if you’re using leveled compaction, you should leave much > more free disk space available than this to accommodate streaming, repair, > and snapshots, which can easily use 10GB or more of disk space. > Furthermore, disk performance tends to decline after 80 to 90% of the disk > space is used, so don’t push the boundaries.>> > > This is the disk usage. Node 4 is the only one that could compact > everything. > node0: /dev/disk1 931Gi 534Gi 396Gi 57% / > node1: /dev/disk1 931Gi 513Gi 417Gi 55% / > node2: /dev/disk1 931Gi 526Gi 404Gi 57% / > node3: /dev/disk1 931Gi 507Gi 424Gi 54% / > node4: /dev/disk1 931Gi 475Gi 456Gi 51% / > > When I try to compact the other ones I get this: > > objc[18698]: Class JavaLaunchHelper is implemented in both /Library/Java/ > JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home/bin/java and > /Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home/jre/lib/libinstrument.dylib. > One of the two will be used. Which one is undefined. > error: Not enough space for compaction, estimated sstables = 2894, > expected write size = 485616651726 > -- StackTrace -- > java.lang.RuntimeException: Not enough space for compaction, estimated > sstables = 2894, expected write size = 485616651726 > at org.apache.cassandra.db.compaction.CompactionTask. > checkAvailableDiskSpace(CompactionTask.java:293) > at org.apache.cassandra.db.compaction.CompactionTask. > runMayThrow(CompactionTask.java:127) > at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) > at org.apache.cassandra.db.compaction.CompactionTask.executeInternal( > CompactionTask.java:76) > at org.apache.cassandra.db.compaction.AbstractCompactionTask.execute( > AbstractCompactionTask.java:59) > at org.apache.cassandra.db.compaction.CompactionManager$7.runMayThrow( > CompactionManager.java:512) > at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) > > I did not set the sstable_size_in_mb I use the 160MB default. > > Is it normal that during compaction it needs so much diskspace? What > would be the best solution to overcome this problem? > > Thanks for your help > >
