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https://issues.apache.org/jira/browse/CASSANDRA-1966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13071284#comment-13071284
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Jonathan Ellis commented on CASSANDRA-1966:
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Hmm, this breaks SerializationsTest:
{noformat}
[junit] org.apache.avro.AvroTypeException: Non-numeric default value for
int: null
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.encode(ResolvingGrammarGenerator.java:364)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.encode(ResolvingGrammarGenerator.java:341)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.getBinary(ResolvingGrammarGenerator.java:285)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.resolveRecords(ResolvingGrammarGenerator.java:264)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.generate(ResolvingGrammarGenerator.java:118)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.resolveRecords(ResolvingGrammarGenerator.java:254)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.generate(ResolvingGrammarGenerator.java:118)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.generate(ResolvingGrammarGenerator.java:151)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.resolveUnion(ResolvingGrammarGenerator.java:186)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.generate(ResolvingGrammarGenerator.java:120)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.resolveRecords(ResolvingGrammarGenerator.java:254)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.generate(ResolvingGrammarGenerator.java:118)
[junit] at
org.apache.avro.io.parsing.ResolvingGrammarGenerator.generate(ResolvingGrammarGenerator.java:50)
[junit] at
org.apache.avro.io.ResolvingDecoder.resolve(ResolvingDecoder.java:76)
[junit] at
org.apache.avro.io.ResolvingDecoder.<init>(ResolvingDecoder.java:46)
[junit] at
org.apache.avro.generic.GenericDatumReader.getResolver(GenericDatumReader.java:93)
[junit] at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:103)
[junit] at
org.apache.cassandra.io.SerDeUtils.deserializeWithSchema(SerDeUtils.java:89)
[junit] at
org.apache.cassandra.db.migration.SerializationsTest.testRead(SerializationsTest.{noformat}
Can you fix?
> Option to control how many items are read on cache load
> -------------------------------------------------------
>
> Key: CASSANDRA-1966
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1966
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Chris Burroughs
> Assignee: Chris Burroughs
> Priority: Minor
> Fix For: 1.0
>
> Attachments: 1966-v1.txt, 1966-v2.txt
>
>
> CASSANDRA-1417 added an option to save the key and/or row cache keys which is
> cool. However, for a row large cache it can take a long time to read all of
> the rows. For example I have a 400,000 item row cache, and loading that on
> restart takes a little under an hour.
> In addition to configuring the size of the row cache, and how often it should
> be saved to disk, I propose an option to control how many items are loaded on
> startup (or alternately only saving n items out of the full row cache to
> begin with).
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