[ 
https://issues.apache.org/jira/browse/CASSANDRA-15724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17083927#comment-17083927
 ] 

Boopalan  commented on CASSANDRA-15724:
---------------------------------------

Thanks [~jmeredithco]. I have prepare a new ubuntu setup.
 # Install Java 1.8.0_242 
 # Install Cassandra 3.11.6
 # Create ext4 filesystem  on our SSD disk and mount in /mnt/ directory 
 # Edit the cassandra.yaml file and replace all data, hints, saved_caches and 
commit to /mnt/ directory
 # Edit the cassandra-en.sh file and replace lineVM_OPTS="$JVM_OPTS 
-Djava.rmi.server.hostname=*127*.0.0.1"

 # Edit jvm.options file
-Dcassandra.config=/etc/cassandra/cassandra.yaml

 # Restart Cassandra
 # nodetool status

Now am running into different issue. Please find the below snippet.

 
{noformat}
root@cassandra-master:/mnt/data/system_auth# systemctl status  cassandra
● cassandra.service - LSB: distributed storage system for structured data
   Loaded: loaded (/etc/init.d/cassandra; generated)
   Active: active (exited) since Wed 2020-04-15 14:07:06 IST; 7min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 29015 ExecStop=/etc/init.d/cassandra stop (code=exited, 
status=0/SUCCESS)
  Process: 29033 ExecStart=/etc/init.d/cassandra start (code=exited, 
status=0/SUCCESS)


Apr 15 14:07:06 cassandra-master systemd[1]: Starting LSB: distributed storage 
system for structured data...
Apr 15 14:07:06 cassandra-master systemd[1]: Started LSB: distributed storage 
system for structured data. {noformat}

{noformat}
root@cassandra-master:/etc/cassandra# nodetool status
nodetool: Failed to connect to '127.0.0.1:7199' - ConnectException: 'Connection 
refused (Connection refused)'. {noformat}

*cat /var/log/cassandra/system.log*
{noformat}
ERROR [MemtableFlushWriter:1] 2020-04-15 14:07:14,791 LogTransaction.java:277 - 
Transaction log [md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log in 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377] indicates txn was not 
completed, trying to abort it now
ERROR [MemtableFlushWriter:1] 2020-04-15 14:07:14,795 LogTransaction.java:280 - 
Failed to abort transaction log 
[md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log in 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377]
java.lang.RuntimeException: java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
        at org.apache.cassandra.io.util.FileUtils.write(FileUtils.java:605) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.util.FileUtils.appendAndSync(FileUtils.java:586) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogReplica.append(LogReplica.java:104) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogReplicaSet.lambda$null$5(LogReplicaSet.java:224)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.utils.Throwables.perform(Throwables.java:113) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.utils.Throwables.perform(Throwables.java:103) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogReplicaSet.append(LogReplicaSet.java:224) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogFile.addRecord(LogFile.java:350) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.db.lifecycle.LogFile.abort(LogFile.java:269) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.utils.Throwables.perform(Throwables.java:113) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.utils.Throwables.perform(Throwables.java:103) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.utils.Throwables.perform(Throwables.java:98) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogTransaction$TransactionTidier.run(LogTransaction.java:278)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogTransaction$TransactionTidier.tidy(LogTransaction.java:260)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.utils.concurrent.Ref$GlobalState.release(Ref.java:326) 
[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.utils.concurrent.Ref$State.ensureReleased(Ref.java:204) 
[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.utils.concurrent.Ref.ensureReleased(Ref.java:124) 
[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogTransaction.complete(LogTransaction.java:397)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogTransaction.doAbort(LogTransaction.java:414)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.abort(Transactional.java:141)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LifecycleTransaction.doAbort(LifecycleTransaction.java:244)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.abort(Transactional.java:141)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1173)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1119)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
[na:1.8.0_242]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
[na:1.8.0_242]
        at 
org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:84)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_242]
Caused by: java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
        at 
sun.nio.fs.UnixException.translateToIOException(UnixException.java:84) 
~[na:1.8.0_242]
        at 
sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102) 
~[na:1.8.0_242]
        at 
sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107) 
~[na:1.8.0_242]
        at 
sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
 ~[na:1.8.0_242]
        at 
java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:434)
 ~[na:1.8.0_242]
        at java.nio.file.Files.newOutputStream(Files.java:216) ~[na:1.8.0_242]
        at java.nio.file.Files.write(Files.java:3351) ~[na:1.8.0_242]
        at org.apache.cassandra.io.util.FileUtils.write(FileUtils.java:598) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        ... 27 common frames omitted
ERROR [MemtableFlushWriter:1] 2020-04-15 14:07:14,798 LogTransaction.java:225 - 
Unable to delete 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
 as it does not exist, see debug log file for stack trace
ERROR [MemtablePostFlush:1] 2020-04-15 14:07:14,802 CassandraDaemon.java:235 - 
Exception in thread Thread[MemtablePostFlush:1,5,main]
java.lang.RuntimeException: java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
        at org.apache.cassandra.io.util.FileUtils.write(FileUtils.java:605) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.util.FileUtils.appendAndSync(FileUtils.java:586) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogReplica.append(LogReplica.java:104) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogReplicaSet.lambda$null$5(LogReplicaSet.java:224)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.utils.Throwables.perform(Throwables.java:113) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.utils.Throwables.perform(Throwables.java:103) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogReplicaSet.append(LogReplicaSet.java:224) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogFile.addRecord(LogFile.java:350) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.db.lifecycle.LogFile.add(LogFile.java:297) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogTransaction.trackNew(LogTransaction.java:139)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LifecycleTransaction.trackNew(LifecycleTransaction.java:528)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.sstable.format.big.BigTableWriter.<init>(BigTableWriter.java:81)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.sstable.format.big.BigFormat$WriterFactory.open(BigFormat.java:92)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.sstable.format.SSTableWriter.create(SSTableWriter.java:102)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.create(SimpleSSTableMultiWriter.java:119)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.compaction.AbstractCompactionStrategy.createSSTableMultiWriter(AbstractCompactionStrategy.java:588)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.compaction.CompactionStrategyManager.createSSTableMultiWriter(CompactionStrategyManager.java:1027)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.ColumnFamilyStore.createSSTableMultiWriter(ColumnFamilyStore.java:533)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.Memtable$FlushRunnable.createFlushWriter(Memtable.java:504)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.Memtable$FlushRunnable.<init>(Memtable.java:443) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.Memtable$FlushRunnable.<init>(Memtable.java:420) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.Memtable.createFlushRunnables(Memtable.java:307) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.db.Memtable.flushRunnables(Memtable.java:298) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1154)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1119)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
~[na:1.8.0_242]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
[na:1.8.0_242]
        at 
org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:84)
 [apache-cassandra-3.11.6.jar:3.11.6]
        at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_242]
        Suppressed: java.lang.RuntimeException: 
java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
                at 
org.apache.cassandra.io.util.FileUtils.write(FileUtils.java:605) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.io.util.FileUtils.appendAndSync(FileUtils.java:586) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogReplica.append(LogReplica.java:104) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogReplicaSet.lambda$null$5(LogReplicaSet.java:224)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.Throwables.perform(Throwables.java:113) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.Throwables.perform(Throwables.java:103) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogReplicaSet.append(LogReplicaSet.java:224) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogFile.addRecord(LogFile.java:350) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogFile.abort(LogFile.java:269) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.Throwables.perform(Throwables.java:113) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.Throwables.perform(Throwables.java:103) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.Throwables.perform(Throwables.java:98) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogTransaction.doAbort(LogTransaction.java:414)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.abort(Transactional.java:141)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LifecycleTransaction.doAbort(LifecycleTransaction.java:244)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.abort(Transactional.java:141)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1173)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                ... 5 common frames omitted
        Caused by: java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
                at 
sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
                at 
sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
                at 
sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
                at 
sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
                at 
java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:434)
                at java.nio.file.Files.newOutputStream(Files.java:216)
                at java.nio.file.Files.write(Files.java:3351)
                at 
org.apache.cassandra.io.util.FileUtils.write(FileUtils.java:598)
                ... 21 common frames omitted
Caused by: java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
        at 
sun.nio.fs.UnixException.translateToIOException(UnixException.java:84) 
~[na:1.8.0_242]
        at 
sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102) 
~[na:1.8.0_242]
        at 
sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107) 
~[na:1.8.0_242]
        at 
sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
 ~[na:1.8.0_242]
        at 
java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:434)
 ~[na:1.8.0_242]
        at java.nio.file.Files.newOutputStream(Files.java:216) ~[na:1.8.0_242]
        at java.nio.file.Files.write(Files.java:3351) ~[na:1.8.0_242]
        at org.apache.cassandra.io.util.FileUtils.write(FileUtils.java:598) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        ... 28 common frames omitted
ERROR [main] 2020-04-15 14:07:14,803 CassandraDaemon.java:774 - Exception 
encountered during startup
java.lang.RuntimeException: java.util.concurrent.ExecutionException: 
java.lang.RuntimeException: java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
        at 
org.apache.cassandra.utils.FBUtilities.waitOnFuture(FBUtilities.java:443) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.SystemKeyspace.forceBlockingFlush(SystemKeyspace.java:829)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.SystemKeyspace.removeTruncationRecord(SystemKeyspace.java:668)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.ColumnFamilyStore.invalidate(ColumnFamilyStore.java:568)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.ColumnFamilyStore.invalidate(ColumnFamilyStore.java:544)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.schema.LegacySchemaMigrator.lambda$unloadLegacySchemaTables$1(LegacySchemaMigrator.java:137)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_242]
        at 
org.apache.cassandra.schema.LegacySchemaMigrator.unloadLegacySchemaTables(LegacySchemaMigrator.java:137)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.schema.LegacySchemaMigrator.migrate(LegacySchemaMigrator.java:83)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:263) 
[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:630) 
[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:757) 
[apache-cassandra-3.11.6.jar:3.11.6]
Caused by: java.util.concurrent.ExecutionException: java.lang.RuntimeException: 
java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
        at java.util.concurrent.FutureTask.report(FutureTask.java:122) 
~[na:1.8.0_242]
        at java.util.concurrent.FutureTask.get(FutureTask.java:192) 
~[na:1.8.0_242]
        at 
org.apache.cassandra.utils.FBUtilities.waitOnFuture(FBUtilities.java:439) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        ... 11 common frames omitted
Caused by: java.lang.RuntimeException: java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
        at org.apache.cassandra.io.util.FileUtils.write(FileUtils.java:605) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.util.FileUtils.appendAndSync(FileUtils.java:586) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogReplica.append(LogReplica.java:104) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogReplicaSet.lambda$null$5(LogReplicaSet.java:224)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.utils.Throwables.perform(Throwables.java:113) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.utils.Throwables.perform(Throwables.java:103) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogReplicaSet.append(LogReplicaSet.java:224) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogFile.addRecord(LogFile.java:350) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.db.lifecycle.LogFile.add(LogFile.java:297) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LogTransaction.trackNew(LogTransaction.java:139)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.lifecycle.LifecycleTransaction.trackNew(LifecycleTransaction.java:528)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.sstable.format.big.BigTableWriter.<init>(BigTableWriter.java:81)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.sstable.format.big.BigFormat$WriterFactory.open(BigFormat.java:92)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.sstable.format.SSTableWriter.create(SSTableWriter.java:102)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.create(SimpleSSTableMultiWriter.java:119)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.compaction.AbstractCompactionStrategy.createSSTableMultiWriter(AbstractCompactionStrategy.java:588)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.compaction.CompactionStrategyManager.createSSTableMultiWriter(CompactionStrategyManager.java:1027)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.ColumnFamilyStore.createSSTableMultiWriter(ColumnFamilyStore.java:533)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.Memtable$FlushRunnable.createFlushWriter(Memtable.java:504)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.Memtable$FlushRunnable.<init>(Memtable.java:443) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.Memtable$FlushRunnable.<init>(Memtable.java:420) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.Memtable.createFlushRunnables(Memtable.java:307) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at org.apache.cassandra.db.Memtable.flushRunnables(Memtable.java:298) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1154)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1119)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
~[na:1.8.0_242]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
~[na:1.8.0_242]
        at 
org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:84)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
        at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_242]
        Suppressed: java.lang.RuntimeException: 
java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
                at 
org.apache.cassandra.io.util.FileUtils.write(FileUtils.java:605) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.io.util.FileUtils.appendAndSync(FileUtils.java:586) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogReplica.append(LogReplica.java:104) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogReplicaSet.lambda$null$5(LogReplicaSet.java:224)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.Throwables.perform(Throwables.java:113) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.Throwables.perform(Throwables.java:103) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogReplicaSet.append(LogReplicaSet.java:224) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogFile.addRecord(LogFile.java:350) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogFile.abort(LogFile.java:269) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.Throwables.perform(Throwables.java:113) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.Throwables.perform(Throwables.java:103) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.Throwables.perform(Throwables.java:98) 
~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LogTransaction.doAbort(LogTransaction.java:414)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.abort(Transactional.java:141)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.lifecycle.LifecycleTransaction.doAbort(LifecycleTransaction.java:244)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.abort(Transactional.java:141)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                at 
org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1173)
 ~[apache-cassandra-3.11.6.jar:3.11.6]
                ... 5 common frames omitted
        Caused by: java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
                at 
sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
                at 
sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
                at 
sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
                at 
sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
                at 
java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:434)
                at java.nio.file.Files.newOutputStream(Files.java:216)
                at java.nio.file.Files.write(Files.java:3351)
                at 
org.apache.cassandra.io.util.FileUtils.write(FileUtils.java:598)
                ... 21 common frames omitted
Caused by: java.nio.file.AccessDeniedException: 
/mnt/data/system/local-7ad54392bcdd35a684174e047860b377/md_txn_flush_4ed121f0-7ef4-11ea-8dc8-cf6c58093313.log
        at 
sun.nio.fs.UnixException.translateToIOException(UnixException.java:84) 
~[na:1.8.0_242]
        at 
sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102) 
~[na:1.8.0_242]
        at 
sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107) 
~[na:1.8.0_242]
        at 
sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
 ~[na:1.8.0_242]
        at 
java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:434)
 ~[na:1.8.0_242]
        at java.nio.file.Files.newOutputStream(Files.java:216) ~[na:1.8.0_242]
        at java.nio.file.Files.write(Files.java:3351) ~[na:1.8.0_242]
        at org.apache.cassandra.io.util.FileUtils.write(FileUtils.java:598) 
~[apache-cassandra-3.11.6.jar:3.11.6]
        ... 28 common frames omitted
 {noformat}

Please help me to resolve this issue

> Modify cassandra.yaml and replace the default data location, still data 
> stored in default location
> --------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-15724
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15724
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Local/SSTable
>            Reporter: Boopalan 
>            Priority: Normal
>
> I have created a separated directory (/mnt/) for cassandra data, commit log, 
> hint and saved_cache. But data are not created on created directory, stored 
> in default location /var/lib/cassandra/data.
>  
> *Configuration File:*
> [root@node-master cassandra]# cat /etc/cassandra/default.conf/cassandra.yaml 
> | grep /mnt/
> hints_directory: */mnt/*hints
>     - */mnt/*data
> commitlog_directory: */mnt/*commitlog
> cdc_raw_directory: */mnt/*cdc_raw
> saved_caches_directory: */mnt/*saved_caches
>  
> Please help me to resolve this issue.



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