[
https://issues.apache.org/jira/browse/CASSANDRA-15778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17105653#comment-17105653
]
Alex Petrov edited comment on CASSANDRA-15778 at 5/12/20, 7:33 PM:
-------------------------------------------------------------------
I've taken a short look and wanted to precaution against ignoring or even
purging values from the hidden compact column, since there are scenarios when
it can contain legitimate data.
I've been able to reproduce an issue with a similar, albeit not exactly same
stacktrace (leaving only the part from sstable iterator downward):
{code}
ERROR 18:08:11 Uncaught exception on thread Thread[SharedPool-Worker-2,10,main]
java.lang.RuntimeException: org.apache.cassandra.serializers.MarshalException:
EmptyType only accept empty values
at
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2470)
~[main/:na]
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
~[na:1.8.0_171]
at
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:165)
~[main/:na]
at
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:137)
[main/:na]
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109)
[main/:na]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_171]
Caused by: org.apache.cassandra.serializers.MarshalException: EmptyType only
accept empty values
at
org.apache.cassandra.serializers.EmptySerializer.validate(EmptySerializer.java:42)
~[main/:na]
at
org.apache.cassandra.db.marshal.AbstractType.validate(AbstractType.java:159)
~[main/:na]
at
org.apache.cassandra.db.marshal.AbstractType.validateIfFixedSize(AbstractType.java:390)
~[main/:na]
at
org.apache.cassandra.db.LegacyLayout$CellGrouper.addCell(LegacyLayout.java:1457)
~[main/:na]
at
org.apache.cassandra.db.LegacyLayout$CellGrouper.addAtom(LegacyLayout.java:1377)
~[main/:na]
at
org.apache.cassandra.db.UnfilteredDeserializer$OldFormatDeserializer$UnfilteredIterator.readRow(UnfilteredDeserializer.java:542)
~[main/:na]
at
org.apache.cassandra.db.UnfilteredDeserializer$OldFormatDeserializer$UnfilteredIterator.hasNext(UnfilteredDeserializer.java:519)
~[main/:na]
at
org.apache.cassandra.db.UnfilteredDeserializer$OldFormatDeserializer.hasNext(UnfilteredDeserializer.java:336)
~[main/:na]
at
org.apache.cassandra.db.columniterator.SSTableIterator$ForwardReader.computeNext(SSTableIterator.java:140)
~[main/:na]
at
org.apache.cassandra.db.columniterator.SSTableIterator$ForwardReader.hasNextInternal(SSTableIterator.java:172)
~[main/:na]
at
org.apache.cassandra.db.columniterator.AbstractSSTableIterator$Reader.hasNext(AbstractSSTableIterator.java:336)
~
{code}
In short, this is a table created on 2.2 side with: {{CREATE TABLE table_0 (key
text, value text, PRIMARY KEY (key, value)) WITH COMPACT STORAGE;}}
If you write data into this table with thrift ({{ThriftClient#batch_mutate}}),
you will end up with data in the hidden column, which looks like this on the
2.1 side:
{code}
select * from ks1.table_0;
key | value
-------+-------
key22 | key1
key22 | key4
key11 | key1
key11 | key4
(4 rows)
{code}
And like this in sstabledump:
{code}
[
{"key": "key22",
"cells": [["key1","76616c756531",1589306163593],
["key4","76616c756534",1589306163594]]},
{"key": "key11",
"cells": [["key1","76616c756531",1589306163593],
["key4","76616c756534",1589306163594]]}
]
{code}
Of course, on 3.x side you wouldn't be able to see the values.
UPDATE: Was able to reproduce it:
{code}
java.lang.RuntimeException:
org.apache.cassandra.io.sstable.CorruptSSTableException: Corrupted:
/Users/ifesdjeen/foss/java/apache-cassandra/data/data/ks1/table_0-05609b80948511eabfa891431c623cd5/md-2-big-Data.db
at
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2470)
~[main/:na]
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
~[na:1.8.0_171]
at
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:165)
~[main/:na]
at
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:137)
[main/:na]
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109)
[main/:na]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_171]
Caused by: org.apache.cassandra.io.sstable.CorruptSSTableException: Corrupted:
/Users/ifesdjeen/foss/java/apache-cassandra/data/data/ks1/table_0-05609b80948511eabfa891431c623cd5/md-2-big-Data.db
at
org.apache.cassandra.db.columniterator.AbstractSSTableIterator$Reader.hasNext(AbstractSSTableIterator.java:349)
~[main/:na]
at
org.apache.cassandra.db.columniterator.AbstractSSTableIterator.hasNext(AbstractSSTableIterator.java:220)
~[main/:na]
at
org.apache.cassandra.db.columniterator.SSTableIterator.hasNext(SSTableIterator.java:33)
~[main/:na]
at
org.apache.cassandra.db.rows.LazilyInitializedUnfilteredRowIterator.computeNext(LazilyInitializedUnfilteredRowIterator.java:95)
~[main/:na]
at
org.apache.cassandra.db.rows.LazilyInitializedUnfilteredRowIterator.computeNext(LazilyInitializedUnfilteredRowIterator.java:32)
~[main/:na]
at
org.apache.cassandra.utils.AbstractIterator.hasNext(AbstractIterator.java:47)
~[main/:na]
at
org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:129)
~[main/:na]
at
org.apache.cassandra.db.rows.LazilyInitializedUnfilteredRowIterator.computeNext(LazilyInitializedUnfilteredRowIterator.java:95)
~[main/:na]
at
org.apache.cassandra.db.rows.LazilyInitializedUnfilteredRowIterator.computeNext(LazilyInitializedUnfilteredRowIterator.java:32)
~[main/:na]
at
org.apache.cassandra.utils.AbstractIterator.hasNext(AbstractIterator.java:47)
~[main/:na]
at
org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:129)
~[main/:na]
at
org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:129)
~[main/:na]
at
org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:131)
~[main/:na]
at
org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:87)
~[main/:na]
at
org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:77)
~[main/:na]
at
org.apache.cassandra.db.partitions.UnfilteredPartitionIterators$Serializer.serialize(UnfilteredPartitionIterators.java:294)
~[main/:na]
at
org.apache.cassandra.db.ReadResponse$LocalDataResponse.build(ReadResponse.java:187)
~[main/:na]
at
org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:180)
~[main/:na]
at
org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:176)
~[main/:na]
at
org.apache.cassandra.db.ReadResponse.createDataResponse(ReadResponse.java:76)
~[main/:na]
at
org.apache.cassandra.db.ReadCommand.createResponse(ReadCommand.java:341)
~[main/:na]
at
org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:1785)
~[main/:na]
at
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2466)
~[main/:na]
... 5 common frames omitted
Caused by: java.lang.ArrayIndexOutOfBoundsException: 97
at
org.apache.cassandra.db.ClusteringPrefix$Deserializer.prepare(ClusteringPrefix.java:431)
~[main/:na]
at
org.apache.cassandra.db.UnfilteredDeserializer$CurrentDeserializer.prepareNext(UnfilteredDeserializer.java:170)
~[main/:na]
at
org.apache.cassandra.db.UnfilteredDeserializer$CurrentDeserializer.hasNext(UnfilteredDeserializer.java:151)
~[main/:na]
at
org.apache.cassandra.db.columniterator.SSTableIterator$ForwardReader.computeNext(SSTableIterator.java:140)
~[main/:na]
at
org.apache.cassandra.db.columniterator.SSTableIterator$ForwardReader.hasNextInternal(SSTableIterator.java:172)
~[main/:na]
at
org.apache.cassandra.db.columniterator.AbstractSSTableIterator$Reader.hasNext(AbstractSSTableIterator.java:336)
~[main/:na]
... 27 common frames omitted
{code}
Steps:
1. Create a compact table in 2.1 (or 2.2), doesn't matter
2. Write data to it with thrift
3. Upgrade sstables
4. Try reading data from this table
On latest 3.0, you won't get past {{EmptySerializer#validate}}, because of
[CASSANDRA-15373], so you'll have to skip validation manually or use a version
that doesn't contain a fix.
But this only confirms that we should reconsider the way we treat EmptyType and
thrift values.
was (Author: ifesdjeen):
I've taken a short look and wanted to precaution against ignoring or even
purging values from the hidden compact column, since there are scenarios when
it can contain legitimate data.
I've been able to reproduce an issue with a similar, albeit not exactly same
stacktrace (leaving only the part from sstable iterator downward):
{code}
ERROR 18:08:11 Uncaught exception on thread Thread[SharedPool-Worker-2,10,main]
java.lang.RuntimeException: org.apache.cassandra.serializers.MarshalException:
EmptyType only accept empty values
at
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2470)
~[main/:na]
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
~[na:1.8.0_171]
at
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:165)
~[main/:na]
at
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:137)
[main/:na]
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109)
[main/:na]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_171]
Caused by: org.apache.cassandra.serializers.MarshalException: EmptyType only
accept empty values
at
org.apache.cassandra.serializers.EmptySerializer.validate(EmptySerializer.java:42)
~[main/:na]
at
org.apache.cassandra.db.marshal.AbstractType.validate(AbstractType.java:159)
~[main/:na]
at
org.apache.cassandra.db.marshal.AbstractType.validateIfFixedSize(AbstractType.java:390)
~[main/:na]
at
org.apache.cassandra.db.LegacyLayout$CellGrouper.addCell(LegacyLayout.java:1457)
~[main/:na]
at
org.apache.cassandra.db.LegacyLayout$CellGrouper.addAtom(LegacyLayout.java:1377)
~[main/:na]
at
org.apache.cassandra.db.UnfilteredDeserializer$OldFormatDeserializer$UnfilteredIterator.readRow(UnfilteredDeserializer.java:542)
~[main/:na]
at
org.apache.cassandra.db.UnfilteredDeserializer$OldFormatDeserializer$UnfilteredIterator.hasNext(UnfilteredDeserializer.java:519)
~[main/:na]
at
org.apache.cassandra.db.UnfilteredDeserializer$OldFormatDeserializer.hasNext(UnfilteredDeserializer.java:336)
~[main/:na]
at
org.apache.cassandra.db.columniterator.SSTableIterator$ForwardReader.computeNext(SSTableIterator.java:140)
~[main/:na]
at
org.apache.cassandra.db.columniterator.SSTableIterator$ForwardReader.hasNextInternal(SSTableIterator.java:172)
~[main/:na]
at
org.apache.cassandra.db.columniterator.AbstractSSTableIterator$Reader.hasNext(AbstractSSTableIterator.java:336)
~
{code}
In short, this is a table created on 2.2 side with: {{CREATE TABLE table_0 (key
text, value text, PRIMARY KEY (key, value)) WITH COMPACT STORAGE;}}
If you write data into this table with thrift ({{ThriftClient#batch_mutate}}),
you will end up with data in the hidden column, which looks like this on the
2.1 side:
{code}
select * from ks1.table_0;
key | value
-------+-------
key22 | key1
key22 | key4
key11 | key1
key11 | key4
(4 rows)
{code}
And like this in sstabledump:
{code}
[
{"key": "key22",
"cells": [["key1","76616c756531",1589306163593],
["key4","76616c756534",1589306163594]]},
{"key": "key11",
"cells": [["key1","76616c756531",1589306163593],
["key4","76616c756534",1589306163594]]}
]
{code}
Of course, on 3.x side you wouldn't be able to see the values.
One theory is that stack trace that Sumanth has posted above could have been a
result of a read-repair, which has propagated the value to 3.0 sstable, since
normally a 3.0 node wouldn't even start with such table. I'll continue
tomorrow, will create a mixed mode cluster, and will see if a read-repair
propagates this write and corrupts 3.0 sstable.
Not saying that this all couldn't have been a result of some weird corruption
resulting from anything else, but primary point of writing this is not to get
to the bottom of the issue but caution against changing behaviour of
{{EmptyType}} at least until we know what is going on.
> CorruptSSTableException after a 2.1 SSTable is upgraded to 3.0, failing reads
> -----------------------------------------------------------------------------
>
> Key: CASSANDRA-15778
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15778
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Compaction, Local/SSTable
> Reporter: Sumanth Pasupuleti
> Assignee: David Capwell
> Priority: Normal
> Fix For: 3.0.x
>
>
> Below is the exception with stack trace. This issue is consistently
> reproduce-able.
> {code:java}
> ERROR [SharedPool-Worker-1] 2020-05-01 14:57:57,661
> AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread
> Thread[SharedPool-Worker-1,5,main]ERROR [SharedPool-Worker-1] 2020-05-01
> 14:57:57,661 AbstractLocalAwareExecutorService.java:169 - Uncaught exception
> on thread
> Thread[SharedPool-Worker-1,5,main]org.apache.cassandra.io.sstable.CorruptSSTableException:
> Corrupted:
> /mnt/data/cassandra/data/<ks>/<cf-fda511301fb311e7bd79fd24f2fcfb0d/md-10151-big-Data.db
> at
> org.apache.cassandra.db.columniterator.AbstractSSTableIterator$Reader.hasNext(AbstractSSTableIterator.java:349)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.columniterator.AbstractSSTableIterator.hasNext(AbstractSSTableIterator.java:220)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.columniterator.SSTableIterator.hasNext(SSTableIterator.java:33)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.rows.LazilyInitializedUnfilteredRowIterator.computeNext(LazilyInitializedUnfilteredRowIterator.java:95)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.rows.LazilyInitializedUnfilteredRowIterator.computeNext(LazilyInitializedUnfilteredRowIterator.java:32)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.utils.AbstractIterator.hasNext(AbstractIterator.java:47)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:129)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.rows.LazilyInitializedUnfilteredRowIterator.computeNext(LazilyInitializedUnfilteredRowIterator.java:95)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.rows.LazilyInitializedUnfilteredRowIterator.computeNext(LazilyInitializedUnfilteredRowIterator.java:32)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.utils.AbstractIterator.hasNext(AbstractIterator.java:47)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:129)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:129)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:131)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:87)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:77)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.partitions.UnfilteredPartitionIterators$Serializer.serialize(UnfilteredPartitionIterators.java:294)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.ReadResponse$LocalDataResponse.build(ReadResponse.java:187)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:180)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:176)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.ReadResponse.createDataResponse(ReadResponse.java:76)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.ReadCommand.createResponse(ReadCommand.java:341)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.ReadCommandVerbHandler.doVerb(ReadCommandVerbHandler.java:47)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:67)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[na:1.8.0_231] at
> org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:165)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:137)
> [nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109)
> [nf-cassandra-3.0.19.8.jar:3.0.19.8] at java.lang.Thread.run(Thread.java:748)
> [na:1.8.0_231]Caused by: java.lang.ArrayIndexOutOfBoundsException: 121 at
> org.apache.cassandra.db.ClusteringPrefix$Deserializer.prepare(ClusteringPrefix.java:425)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.UnfilteredDeserializer$CurrentDeserializer.prepareNext(UnfilteredDeserializer.java:170)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.UnfilteredDeserializer$CurrentDeserializer.hasNext(UnfilteredDeserializer.java:151)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.columniterator.SSTableIterator$ForwardReader.computeNext(SSTableIterator.java:140)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.columniterator.SSTableIterator$ForwardReader.hasNextInternal(SSTableIterator.java:172)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] at
> org.apache.cassandra.db.columniterator.AbstractSSTableIterator$Reader.hasNext(AbstractSSTableIterator.java:336)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] ... 27 common frames omitted
> Caused by: java.lang.ArrayIndexOutOfBoundsException: 121
> at
> org.apache.cassandra.db.ClusteringPrefix$Deserializer.prepare(ClusteringPrefix.java:425)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8]
> at
> org.apache.cassandra.db.UnfilteredDeserializer$CurrentDeserializer.prepareNext(UnfilteredDeserializer.java:170)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8]
> at
> org.apache.cassandra.db.UnfilteredDeserializer$CurrentDeserializer.hasNext(UnfilteredDeserializer.java:151)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8]
> at
> org.apache.cassandra.db.columniterator.SSTableIterator$ForwardReader.computeNext(SSTableIterator.java:140)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8]
> at
> org.apache.cassandra.db.columniterator.SSTableIterator$ForwardReader.hasNextInternal(SSTableIterator.java:172)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8]
> at
> org.apache.cassandra.db.columniterator.AbstractSSTableIterator$Reader.hasNext(AbstractSSTableIterator.java:336)
> ~[nf-cassandra-3.0.19.8.jar:3.0.19.8] ... 27 common frames omitted
> {code}
> Column family definition
> {code:java}
> CREATE TABLE <keyspace>."<cf>" (
> key text,
> value text,
> PRIMARY KEY (key, value)
> ) WITH COMPACT STORAGE
> AND CLUSTERING ORDER BY (value ASC)
> AND bloom_filter_fp_chance = 0.01
> AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
> AND comment = ''
> AND compaction = {'class':
> 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy',
> 'max_threshold': '32', 'min_threshold': '4'}
> AND compression = {'enabled': 'false'}
> AND crc_check_chance = 1.0
> AND dclocal_read_repair_chance = 0.1
> AND default_time_to_live = 0
> AND gc_grace_seconds = 864000
> AND max_index_interval = 2048
> AND memtable_flush_period_in_ms = 0
> AND min_index_interval = 128
> AND read_repair_chance = 0.0
> AND speculative_retry = '99PERCENTILE';{code}
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