[
https://issues.apache.org/jira/browse/CASSANDRA-20182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Klay updated CASSANDRA-20182:
-----------------------------
Description:
I am trying to migrate legacy data (2.2) to the latest version following the
path 2.2 => 3.0 => 4.0.
However, when migrating data from 2.2.19 to 3.0.30, I observed that the upgrade
process could crash for certain data.
h1. Reproduce
Start up a cassandra 2.2.19 (single node is enough). Execute the following
commands
{code:java}
CREATE KEYSPACE IF NOT EXISTS ks WITH REPLICATION = { 'class' :
'SimpleStrategy', 'replication_factor' : 1 };
CREATE TABLE IF NOT EXISTS ks.tb (id INT, value INT, PRIMARY KEY (id));
DELETE value FROM ks.tb WHERE id = 3;
ALTER TABLE ks.tb DROP value ;
ALTER TABLE ks.tb ADD value TEXT ; {code}
Flush and start up 3.0.30, the start up crashes with the following logs
{code:java}
ERROR 04:03:06 Exception in thread Thread[MemtablePostFlush:1,5,main]
java.lang.AssertionError: null
at org.apache.cassandra.db.rows.Rows.collectStats(Rows.java:70)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter$StatsCollector.applyToRow(BigTableWriter.java:197)
at org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:137)
at
org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:71)
at
org.apache.cassandra.db.ColumnIndex.writeAndBuildIndex(ColumnIndex.java:49)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:149)
at
org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:45)
at
org.apache.cassandra.io.sstable.SSTableTxnWriter.append(SSTableTxnWriter.java:52)
at
org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:390)
at org.apache.cassandra.db.Memtable.flush(Memtable.java:328)
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1098)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:83)
at java.lang.Thread.run(Thread.java:750)
Exception (java.lang.RuntimeException) encountered during startup:
java.util.concurrent.ExecutionException: java.lang.AssertionError
java.lang.RuntimeException: java.util.concurrent.ExecutionException:
java.lang.AssertionError
at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:62)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:420)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:383)
at
org.apache.cassandra.db.commitlog.CommitLogReplayer.blockForWrites(CommitLogReplayer.java:267)
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:188)
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:168)
at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:342)
at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:636)
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:837)
Caused by: java.util.concurrent.ExecutionException: java.lang.AssertionError
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:407)
... 7 more
Caused by: java.lang.AssertionError
at org.apache.cassandra.db.rows.Rows.collectStats(Rows.java:70)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter$StatsCollector.applyToRow(BigTableWriter.java:197)
at org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:137)
at
org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:71)
at
org.apache.cassandra.db.ColumnIndex.writeAndBuildIndex(ColumnIndex.java:49)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:149)
at
org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:45)
at
org.apache.cassandra.io.sstable.SSTableTxnWriter.append(SSTableTxnWriter.java:52)
at
org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:390)
at org.apache.cassandra.db.Memtable.flush(Memtable.java:328)
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1098)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:83)
at java.lang.Thread.run(Thread.java:750)
ERROR 04:03:06 Exception encountered during startup
java.lang.RuntimeException: java.util.concurrent.ExecutionException:
java.lang.AssertionError
at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:62)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:420)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:383)
at
org.apache.cassandra.db.commitlog.CommitLogReplayer.blockForWrites(CommitLogReplayer.java:267)
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:188)
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:168)
at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:342)
at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:636)
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:837)
Caused by: java.util.concurrent.ExecutionException: java.lang.AssertionError
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:407)
... 7 common frames omitted
Caused by: java.lang.AssertionError: null
at org.apache.cassandra.db.rows.Rows.collectStats(Rows.java:70)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter$StatsCollector.applyToRow(BigTableWriter.java:197)
at org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:137)
at
org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:71)
at
org.apache.cassandra.db.ColumnIndex.writeAndBuildIndex(ColumnIndex.java:49)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:149)
at
org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:45)
at
org.apache.cassandra.io.sstable.SSTableTxnWriter.append(SSTableTxnWriter.java:52)
at
org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:390)
at org.apache.cassandra.db.Memtable.flush(Memtable.java:328)
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1098)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:83)
at java.lang.Thread.run(Thread.java:750) {code}
was:
I am trying to migrate legacy data (2.2) to the latest version following the
path 2.2 => 3.0 => 4.0.
However, when migrating data from 2.2.19 to 3.0.30, I observed that the upgrade
process could crash for certain data.
h1. Reproduce
Start up a cassandra 2.2.19 (single node is enough). Execute the following
commands
{code:java}
CREATE KEYSPACE IF NOT EXISTS ks WITH REPLICATION = { 'class' :
'SimpleStrategy', 'replication_factor' : 1 };
CREATE TABLE IF NOT EXISTS ks.tb (id INT, value INT, PRIMARY KEY (id));
DELETE value FROM ks.tb WHERE id = 3;
ALTER TABLE ks.tb DROP value ;
ALTER TABLE ks.tb ADD value TEXT ; {code}
Flush and start up 3.0.30, the start up crashes with the following logs
{code:java}
ERROR 04:03:06 Exception in thread Thread[MemtablePostFlush:1,5,main]
java.lang.AssertionError: null
at org.apache.cassandra.db.rows.Rows.collectStats(Rows.java:70)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter$StatsCollector.applyToRow(BigTableWriter.java:197)
at org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:137)
at
org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:71)
at
org.apache.cassandra.db.ColumnIndex.writeAndBuildIndex(ColumnIndex.java:49)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:149)
at
org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:45)
at
org.apache.cassandra.io.sstable.SSTableTxnWriter.append(SSTableTxnWriter.java:52)
at
org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:390)
at org.apache.cassandra.db.Memtable.flush(Memtable.java:328)
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1098)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:83)
at java.lang.Thread.run(Thread.java:750)
Exception (java.lang.RuntimeException) encountered during startup:
java.util.concurrent.ExecutionException: java.lang.AssertionError
java.lang.RuntimeException: java.util.concurrent.ExecutionException:
java.lang.AssertionError
at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:62)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:420)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:383)
at
org.apache.cassandra.db.commitlog.CommitLogReplayer.blockForWrites(CommitLogReplayer.java:267)
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:188)
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:168)
at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:342)
at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:636)
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:837)
Caused by: java.util.concurrent.ExecutionException: java.lang.AssertionError
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:407)
... 7 more
Caused by: java.lang.AssertionError
at org.apache.cassandra.db.rows.Rows.collectStats(Rows.java:70)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter$StatsCollector.applyToRow(BigTableWriter.java:197)
at org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:137)
at
org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:71)
at
org.apache.cassandra.db.ColumnIndex.writeAndBuildIndex(ColumnIndex.java:49)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:149)
at
org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:45)
at
org.apache.cassandra.io.sstable.SSTableTxnWriter.append(SSTableTxnWriter.java:52)
at
org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:390)
at org.apache.cassandra.db.Memtable.flush(Memtable.java:328)
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1098)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:83)
at java.lang.Thread.run(Thread.java:750)
ERROR 04:03:06 Exception encountered during startup
java.lang.RuntimeException: java.util.concurrent.ExecutionException:
java.lang.AssertionError
at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:62)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:420)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:383)
at
org.apache.cassandra.db.commitlog.CommitLogReplayer.blockForWrites(CommitLogReplayer.java:267)
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:188)
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:168)
at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:342)
at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:636)
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:837)
Caused by: java.util.concurrent.ExecutionException: java.lang.AssertionError
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:407)
... 7 common frames omitted
Caused by: java.lang.AssertionError: null
at org.apache.cassandra.db.rows.Rows.collectStats(Rows.java:70)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter$StatsCollector.applyToRow(BigTableWriter.java:197)
at org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:137)
at
org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:71)
at
org.apache.cassandra.db.ColumnIndex.writeAndBuildIndex(ColumnIndex.java:49)
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:149)
at
org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:45)
at
org.apache.cassandra.io.sstable.SSTableTxnWriter.append(SSTableTxnWriter.java:52)
at
org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:390)
at org.apache.cassandra.db.Memtable.flush(Memtable.java:328)
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1098)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:83)
at java.lang.Thread.run(Thread.java:750) {code}
> Legacy data (2.2) migration fails
> ---------------------------------
>
> Key: CASSANDRA-20182
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20182
> Project: Apache Cassandra
> Issue Type: Bug
> Reporter: Klay
> Priority: Normal
>
> I am trying to migrate legacy data (2.2) to the latest version following the
> path 2.2 => 3.0 => 4.0.
> However, when migrating data from 2.2.19 to 3.0.30, I observed that the
> upgrade process could crash for certain data.
> h1. Reproduce
> Start up a cassandra 2.2.19 (single node is enough). Execute the following
> commands
> {code:java}
> CREATE KEYSPACE IF NOT EXISTS ks WITH REPLICATION = { 'class' :
> 'SimpleStrategy', 'replication_factor' : 1 };
> CREATE TABLE IF NOT EXISTS ks.tb (id INT, value INT, PRIMARY KEY (id));
> DELETE value FROM ks.tb WHERE id = 3;
> ALTER TABLE ks.tb DROP value ;
> ALTER TABLE ks.tb ADD value TEXT ; {code}
> Flush and start up 3.0.30, the start up crashes with the following logs
> {code:java}
> ERROR 04:03:06 Exception in thread Thread[MemtablePostFlush:1,5,main]
> java.lang.AssertionError: null
> at org.apache.cassandra.db.rows.Rows.collectStats(Rows.java:70)
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter$StatsCollector.applyToRow(BigTableWriter.java:197)
> at
> org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:137)
> at
> org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:71)
> at
> org.apache.cassandra.db.ColumnIndex.writeAndBuildIndex(ColumnIndex.java:49)
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:149)
> at
> org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:45)
> at
> org.apache.cassandra.io.sstable.SSTableTxnWriter.append(SSTableTxnWriter.java:52)
> at
> org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:390)
> at org.apache.cassandra.db.Memtable.flush(Memtable.java:328)
> at
> org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1098)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at
> org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:83)
> at java.lang.Thread.run(Thread.java:750)
> Exception (java.lang.RuntimeException) encountered during startup:
> java.util.concurrent.ExecutionException: java.lang.AssertionError
> java.lang.RuntimeException: java.util.concurrent.ExecutionException:
> java.lang.AssertionError
> at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:62)
> at
> org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:420)
> at
> org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:383)
> at
> org.apache.cassandra.db.commitlog.CommitLogReplayer.blockForWrites(CommitLogReplayer.java:267)
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:188)
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:168)
> at
> org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:342)
> at
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:636)
> at
> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:837)
> Caused by: java.util.concurrent.ExecutionException: java.lang.AssertionError
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
> at
> org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:407)
> ... 7 more
> Caused by: java.lang.AssertionError
> at org.apache.cassandra.db.rows.Rows.collectStats(Rows.java:70)
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter$StatsCollector.applyToRow(BigTableWriter.java:197)
> at
> org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:137)
> at
> org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:71)
> at
> org.apache.cassandra.db.ColumnIndex.writeAndBuildIndex(ColumnIndex.java:49)
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:149)
> at
> org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:45)
> at
> org.apache.cassandra.io.sstable.SSTableTxnWriter.append(SSTableTxnWriter.java:52)
> at
> org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:390)
> at org.apache.cassandra.db.Memtable.flush(Memtable.java:328)
> at
> org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1098)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at
> org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:83)
> at java.lang.Thread.run(Thread.java:750)
> ERROR 04:03:06 Exception encountered during startup
> java.lang.RuntimeException: java.util.concurrent.ExecutionException:
> java.lang.AssertionError
> at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:62)
> at
> org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:420)
> at
> org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:383)
> at
> org.apache.cassandra.db.commitlog.CommitLogReplayer.blockForWrites(CommitLogReplayer.java:267)
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:188)
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:168)
> at
> org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:342)
> at
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:636)
> at
> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:837)
> Caused by: java.util.concurrent.ExecutionException: java.lang.AssertionError
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
> at
> org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:407)
> ... 7 common frames omitted
> Caused by: java.lang.AssertionError: null
> at org.apache.cassandra.db.rows.Rows.collectStats(Rows.java:70)
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter$StatsCollector.applyToRow(BigTableWriter.java:197)
> at
> org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:137)
> at
> org.apache.cassandra.db.transform.UnfilteredRows.isEmpty(UnfilteredRows.java:71)
> at
> org.apache.cassandra.db.ColumnIndex.writeAndBuildIndex(ColumnIndex.java:49)
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:149)
> at
> org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:45)
> at
> org.apache.cassandra.io.sstable.SSTableTxnWriter.append(SSTableTxnWriter.java:52)
> at
> org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:390)
> at org.apache.cassandra.db.Memtable.flush(Memtable.java:328)
> at
> org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1098)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at
> org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:83)
> at java.lang.Thread.run(Thread.java:750) {code}
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