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https://issues.apache.org/jira/browse/CASSANDRA-14136?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Aditya Bharadwaj resolved CASSANDRA-14136.
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Resolution: Duplicate
Closing as a probably duplicate
> MemtableFlushWriter DecoratedKey Exception
> ------------------------------------------
>
> Key: CASSANDRA-14136
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14136
> Project: Cassandra
> Issue Type: Bug
> Components: Core, Secondary Indexes
> Environment: CentOS Linux release 7.3.1611 (Core) , 3 Node cluster
> with Replication Factor or 2
> Reporter: Aditya Bharadwaj
> Labels: beginner
> Attachments: debug.log.gz, system.log.gz
>
>
> Running into this issue on my cluster periodically for different tables.
> After this error is encountered, all the post flushes stop and eventually the
> system runs out of memory.
> On a restart all the commit logs get played normally and things go back to
> normal.
> I'm unable to understand the scenario, but the issue is recreating every few
> days.
> {code}DEBUG [MemtableFlushWriter:884] 2017-12-26 18:19:40,883
> Memtable.java:401 - Completed flushing
> /mnt/DATA/cassandra/data/martjack/products_by_hierarchy5storeid_pascdesc-411cabe0632411e7b25a1b665c06298b/.id
> x_hierarchy1category/mc-2050-big-Data.db (508.127KiB) for commitlog position
> ReplayPosition(segmentId=1513929386900,
> position=19110822)
> DEBUG [MemtableFlushWriter:884] 2017-12-26 18:19:41,150 Memtable.java:368 -
> Writing
> Memtable-products_by_hierarchy5storeid_pascdesc.idx_hierarchy3category@551487729(545.926KiB
> serialized bytes, 324073 ops, 0%/0% of on/off-heap limit)
> ERROR [MemtableFlushWriter:884] 2017-12-26 18:19:41,316
> CassandraDaemon.java:205 - Exception in thread
> Thread[MemtableFlushWriter:884,5,main]
> java.lang.RuntimeException: Last written key DecoratedKey(CU00328612,
> 43553030333238363132) >= current key DecoratedKey(^@^@^@^@^@^@^@^@^@^@,
> 43553030333238363838) writing into
> /mnt/DATA/cassandra/data/martjack/products_by_hierarchy5storeid_pascdesc-411cabe0632411e7b25a1b665c06298b/.idx_hierarchy3category/mc-2134-big-Data.db
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter.beforeAppend(BigTableWriter.java:106)
> ~[apache-cassandra-3.0.9.jar:3.0.9]
> at
> org.apache.cassandra.io.sstable.format.big.BigTableWriter.append(BigTableWriter.java:145)
> ~[apache-cassandra-3.0.9.jar:3.0.9]
> at
> org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.append(SimpleSSTableMultiWriter.java:45)
> ~[apache-cassandra-3.0.9.jar:3.0.9]
> at
> org.apache.cassandra.io.sstable.SSTableTxnWriter.append(SSTableTxnWriter.java:52)
> ~[apache-cassandra-3.0.9.jar:3.0.9]
> at
> org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:394)
> ~[apache-cassandra-3.0.9.jar:3.0.9]
> at org.apache.cassandra.db.Memtable.flush(Memtable.java:332)
> ~[apache-cassandra-3.0.9.jar:3.0.9]
> at
> org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1054)
> ~[apache-cassandra-3.0.9.jar:3.0.9]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> ~[na:1.8.0_112]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> ~[na:1.8.0_112]
> at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_112]
> {code}
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