Fraizier created CASSANDRA-14235:
------------------------------------
Summary: ReadFailure Error -- Large Unbound Query
Key: CASSANDRA-14235
URL: https://issues.apache.org/jira/browse/CASSANDRA-14235
Project: Cassandra
Issue Type: Bug
Components: CQL
Environment: My instance of Cassandra is a single local node. It was
installed via a tar file, versus installing it as a service. All settings are
default.
I'm operating on a Centos 7 machine (release 7.4.1708)
Reporter: Fraizier
Fix For: 3.11.1
Receiving ReadFailure Error when executing 'select' query with cassandra
python-driver.
I have a keyspace called "Documents" and a table with two columns, name and
object. Name is the text datatype and object is the blob datatype. The blob
objects are pickled python class instances. The description of the
keyspace/table is as follows:
{code:java}
CREATE TABLE "Documents".table (
name text PRIMARY KEY,
object blob
) WITH 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 = {'chunk_length_in_kb': '64', 'class':
'org.apache.cassandra.io.compress.LZ4Compressor'}
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}
There are 3509 rows contained within this table and each object is approx. 25kb
of data. (so I'm estimating ~90Mb of data in the object column.) I'm attempting
to run a simple line of python cassandra code :
{code:java}
rows = session.execute("SELECT name, object FROM table")
{code}
and in the log file of cassandra this is what is produced:
{code:java}
WARN [ReadStage-4] 2018-02-13 14:53:12,319
AbstractLocalAwareExecutorService.java:167 - Uncaught exception on thread
Thread[ReadStage-4,10,main]: {}
java.lang.RuntimeException: java.lang.RuntimeException
at
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2598)
~[apache-cassandra-3.11.1.jar:3.11.1]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
~[na:1.8.0_151]
at
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:162)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:134)
[apache-cassandra-3.11.1.jar:3.11.1]
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109)
[apache-cassandra-3.11.1.jar:3.11.1]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]
Caused by: java.lang.RuntimeException: null
at
org.apache.cassandra.io.util.DataOutputBuffer.validateReallocation(DataOutputBuffer.java:134)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.io.util.DataOutputBuffer.calculateNewSize(DataOutputBuffer.java:152)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.io.util.DataOutputBuffer.reallocate(DataOutputBuffer.java:159)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.io.util.DataOutputBuffer.doFlush(DataOutputBuffer.java:119)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.io.util.BufferedDataOutputStreamPlus.write(BufferedDataOutputStreamPlus.java:132)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.io.util.BufferedDataOutputStreamPlus.write(BufferedDataOutputStreamPlus.java:151)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.utils.ByteBufferUtil.writeWithVIntLength(ByteBufferUtil.java:296)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.marshal.AbstractType.writeValue(AbstractType.java:413)
~[apache-cassandra-3.11.1.jar:3.11.1]
at org.apache.cassandra.db.rows.Cell$Serializer.serialize(Cell.java:210)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.rows.UnfilteredSerializer.lambda$serializeRowBody$0(UnfilteredSerializer.java:248)
~[apache-cassandra-3.11.1.jar:3.11.1]
at org.apache.cassandra.utils.btree.BTree.applyForwards(BTree.java:1242)
~[apache-cassandra-3.11.1.jar:3.11.1]
at org.apache.cassandra.utils.btree.BTree.apply(BTree.java:1197)
~[apache-cassandra-3.11.1.jar:3.11.1]
at org.apache.cassandra.db.rows.BTreeRow.apply(BTreeRow.java:172)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.rows.UnfilteredSerializer.serializeRowBody(UnfilteredSerializer.java:236)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.rows.UnfilteredSerializer.serialize(UnfilteredSerializer.java:205)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.rows.UnfilteredSerializer.serialize(UnfilteredSerializer.java:137)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.rows.UnfilteredSerializer.serialize(UnfilteredSerializer.java:125)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:137)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:92)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:79)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.partitions.UnfilteredPartitionIterators$Serializer.serialize(UnfilteredPartitionIterators.java:308)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.ReadResponse$LocalDataResponse.build(ReadResponse.java:167)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:160)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:156)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.db.ReadResponse.createDataResponse(ReadResponse.java:76)
~[apache-cassandra-3.11.1.jar:3.11.1]
at org.apache.cassandra.db.ReadCommand.createResponse(ReadCommand.java:346)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:1886)
~[apache-cassandra-3.11.1.jar:3.11.1]
at
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2594)
~[apache-cassandra-3.11.1.jar:3.11.1]
... 5 common frames omitted
{code}
In addition to my query working in CQLSH, I can also execute the query from
python on other identical tables. The only difference being they have less rows
∴ less data.
I have attempted to change timeout values in the yaml file to not avail, which
makes sense because this is not a timeout issue. I have also modified the
tombstone_failure_threshold variable in the yaml file, again to no avail.
How can I execute a query on a large dataset without receiving this error. Is
it possible to set a batch_size variable? Any guidance at this point would be
helpful.
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