Hey, I am using Cassandra 3.9.
Recently I experienced a problem that prevents me to restart cassandra. I narrowed it down to SASI Index. Steps to reproduce: 1. start cassandra (./bin/cassandra -f) 2. create keyspace, table, index and add data: CREATE KEYSPACE testkeyspace WITH replication = {'class': 'SimpleStrategy', 'replication_factor': '1'} AND durable_writes = true; use testkeyspace ; CREATE TABLE testtable ( col1 uuid, col2 uuid, ts timeuuid, col3 uuid, PRIMARY KEY((col1, col2), ts) ) with clustering order by (ts desc); CREATE CUSTOM INDEX col3_testtable_idx ON testtable(col3) USING 'org.apache.cassandra.index.sasi.SASIIndex' WITH OPTIONS = {'analyzer_class': 'org.apache.cassandra.index.sasi.analyzer.StandardAnalyzer', 'mode': 'PREFIX'}; INSERT INTO testtable(col1, col2, ts, col3) VALUES(898e0014-6161-11e7-b9b7-238ea83bd70b, 898e0014-6161-11e7-b9b7-238ea83bd70b, now(), 898e0014-6161-11e7-b9b7-238ea83bd70b); 3. restart cassandra It crashes with an error (sorry it's huge): DEBUG 09:09:20 Writing Memtable-testtable@1005362073(0.075KiB serialized bytes, 1 ops, 0%/0% of on/off-heap limit), flushed range = (min(-9223372036854775808), max(9223372036854775807)] ERROR 09:09:20 Exception in thread Thread[PerDiskMemtableFlushWriter_0:1,5,main] org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at org.apache.cassandra.db.marshal.UUIDType.fromString(UUIDType.java:118) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.index.sasi.analyzer.StandardAnalyzer.hasNext(StandardAnalyzer.java:168) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter$Index.add(PerSSTableIndexWriter.java:208) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter.lambda$nextUnfilteredCluster$0(PerSSTableIndexWriter.java:132) ~[apache-cassandra-3.9.jar:3.9] at java.util.Collections$SingletonSet.forEach(Collections.java:4767) ~[na:1.8.0_131] at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter.nextUnfilteredCluster(PerSSTableIndexWriter.java:119) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.ColumnIndex.lambda$add$1(ColumnIndex.java:233) ~[apache-cassandra-3.9.jar:3.9] at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_131] at org.apache.cassandra.db.ColumnIndex.add(ColumnIndex.java:233) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.ColumnIndex.buildRowIndex(ColumnIndex.java:107) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:169) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:48) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:458) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.Memtable$FlushRunnable.call(Memtable.java:493) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.Memtable$FlushRunnable.call(Memtable.java:380) ~[apache-cassandra-3.9.jar:3.9] at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_131] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) ~[na:1.8.0_131] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131] Exception (java.lang.RuntimeException) encountered during startup: java.util.concurrent.ExecutionException: java.lang.RuntimeException: java.util.concurrent.ExecutionException: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.RuntimeException: java.util.concurrent.ExecutionException: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:51) ERROR 09:09:20 Exception encountered during startup java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.RuntimeException: java.util.concurrent.ExecutionException: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:51) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:391) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.commitlog.CommitLogReplayer.blockForWrites(CommitLogReplayer.java:168) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.commitlog.CommitLog.recoverFiles(CommitLog.java:188) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.commitlog.CommitLog.recoverSegmentsOnDisk(CommitLog.java:167) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:323) [apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:601) [apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:730) [apache-cassandra-3.9.jar:3.9] Caused by: java.util.concurrent.ExecutionException: java.lang.RuntimeException: java.util.concurrent.ExecutionException: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[na:1.8.0_131] at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[na:1.8.0_131] at org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:384) ~[apache-cassandra-3.9.jar:3.9] ... 6 common frames omitted Caused by: java.lang.RuntimeException: java.util.concurrent.ExecutionException: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:51) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:391) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1122) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1084) ~[apache-cassandra-3.9.jar:3.9] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) ~[na:1.8.0_131] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) ~[na:1.8.0_131] at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_131] Caused by: java.util.concurrent.ExecutionException: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[na:1.8.0_131] at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[na:1.8.0_131] at org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:384) ~[apache-cassandra-3.9.jar:3.9] ... 5 common frames omitted Caused by: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at org.apache.cassandra.db.marshal.UUIDType.fromString(UUIDType.java:118) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.index.sasi.analyzer.StandardAnalyzer.hasNext(StandardAnalyzer.java:168) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter$Index.add(PerSSTableIndexWriter.java:208) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter.lambda$nextUnfilteredCluster$0(PerSSTableIndexWriter.java:132) ~[apache-cassandra-3.9.jar:3.9] at java.util.Collections$SingletonSet.forEach(Collections.java:4767) ~[na:1.8.0_131] at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter.nextUnfilteredCluster(PerSSTableIndexWriter.java:119) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.ColumnIndex.lambda$add$1(ColumnIndex.java:233) ~[apache-cassandra-3.9.jar:3.9] at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_131] at org.apache.cassandra.db.ColumnIndex.add(ColumnIndex.java:233) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.ColumnIndex.buildRowIndex(ColumnIndex.java:107) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:169) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:48) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:458) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.Memtable$FlushRunnable.call(Memtable.java:493) ~[apache-cassandra-3.9.jar:3.9] at org.apache.cassandra.db.Memtable$FlushRunnable.call(Memtable.java:380) ~[apache-cassandra-3.9.jar:3.9] at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_131] ... 3 common frames omitted at org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:391) at org.apache.cassandra.db.commitlog.CommitLogReplayer.blockForWrites(CommitLogReplayer.java:168) at org.apache.cassandra.db.commitlog.CommitLog.recoverFiles(CommitLog.java:188) at org.apache.cassandra.db.commitlog.CommitLog.recoverSegmentsOnDisk(CommitLog.java:167) at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:323) at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:601) at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:730) Caused by: java.util.concurrent.ExecutionException: java.lang.RuntimeException: java.util.concurrent.ExecutionException: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:384) ... 6 more Caused by: java.lang.RuntimeException: java.util.concurrent.ExecutionException: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:51) at org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:391) at org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1122) at org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1084) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:748) Caused by: java.util.concurrent.ExecutionException: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:384) ... 5 more Caused by: org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at org.apache.cassandra.db.marshal.UUIDType.fromString(UUIDType.java:118) at org.apache.cassandra.index.sasi.analyzer.StandardAnalyzer.hasNext(StandardAnalyzer.java:168) at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter$Index.add(PerSSTableIndexWriter.java:208) at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter.lambda$nextUnfilteredCluster$0(PerSSTableIndexWriter.java:132) at java.util.Collections$SingletonSet.forEach(Collections.java:4767) at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter.nextUnfilteredCluster(PerSSTableIndexWriter.java:119) at org.apache.cassandra.db.ColumnIndex.lambda$add$1(ColumnIndex.java:233) at java.lang.Iterable.forEach(Iterable.java:75) at org.apache.cassandra.db.ColumnIndex.add(ColumnIndex.java:233) at org.apache.cassandra.db.ColumnIndex.buildRowIndex(ColumnIndex.java:107) at org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:169) at org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:48) at org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:458) at org.apache.cassandra.db.Memtable$FlushRunnable.call(Memtable.java:493) at org.apache.cassandra.db.Memtable$FlushRunnable.call(Memtable.java:380) at java.util.concurrent.FutureTask.run(FutureTask.java:266) ... 3 more When I do "nodetool flush" I also get: $ ./bin/nodetool flush objc[35941]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/bin/java (0x1052a34c0) and /Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/libinstrument.dylib (0x10536b4e0). One of the two will be used. Which one is undefined. error: Unable to make UUID from 'aa' -- StackTrace -- org.apache.cassandra.serializers.MarshalException: Unable to make UUID from 'aa' at org.apache.cassandra.db.marshal.UUIDType.fromString(UUIDType.java:118) at org.apache.cassandra.index.sasi.analyzer.StandardAnalyzer.hasNext(StandardAnalyzer.java:168) at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter$Index.add(PerSSTableIndexWriter.java:208) at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter.lambda$nextUnfilteredCluster$0(PerSSTableIndexWriter.java:132) at java.util.Collections$SingletonSet.forEach(Collections.java:4767) at org.apache.cassandra.index.sasi.disk.PerSSTableIndexWriter.nextUnfilteredCluster(PerSSTableIndexWriter.java:119) at org.apache.cassandra.db.ColumnIndex.lambda$add$1(ColumnIndex.java:233) at java.lang.Iterable.forEach(Iterable.java:75) at org.apache.cassandra.db.ColumnIndex.add(ColumnIndex.java:233) at org.apache.cassandra.db.ColumnIndex.buildRowIndex(ColumnIndex.java:107) at org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:169) at org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:48) at org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:458) at org.apache.cassandra.db.Memtable$FlushRunnable.call(Memtable.java:493) at org.apache.cassandra.db.Memtable$FlushRunnable.call(Memtable.java:380) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:748) Any ideas how to solve it? I can keep col3 as text, I figured it out, but I already have bunch of data on production and I basically can't do anything with any of nodes, because I won't be able to start them again. Thanks, Lukasz