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https://issues.apache.org/jira/browse/SPARK-8503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14595014#comment-14595014
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Sean Owen commented on SPARK-8503:
----------------------------------

That looks near to Long.MIN_VALUE. It could be overflow, but I suspect 
something in the code returns Long.MIN_VALUE as a size to mean some kind of 
error condition and this is being added to a sum.

This doesn't really have any info that helps reproduce it though. If you can't 
describe your exact data structure, what does debugging reveal about when and 
where this happens?

> SizeEstimator returns negative value for recursive data structures
> ------------------------------------------------------------------
>
>                 Key: SPARK-8503
>                 URL: https://issues.apache.org/jira/browse/SPARK-8503
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 1.3.1
>            Reporter: Ilya Rakitsin
>
> When estimating size of recursive data structures like graphs, with transient 
> fields referencing one another, SizeEstimator may return negative value if 
> the structure if big enough.
> This then affects the logic of other components, e.g. 
> SizeTracker#takeSample() and may lead to incorrect behavior and exceptions 
> like:
> java.lang.IllegalArgumentException: requirement failed: sizeInBytes was 
> negative: -9223372036854691384
>       at scala.Predef$.require(Predef.scala:233)
>       at org.apache.spark.storage.BlockInfo.markReady(BlockInfo.scala:55)
>       at org.apache.spark.storage.BlockManager.doPut(BlockManager.scala:810)
>       at 
> org.apache.spark.storage.BlockManager.putIterator(BlockManager.scala:637)
>       at 
> org.apache.spark.storage.BlockManager.putSingle(BlockManager.scala:991)
>       at 
> org.apache.spark.broadcast.TorrentBroadcast.writeBlocks(TorrentBroadcast.scala:98)
>       at 
> org.apache.spark.broadcast.TorrentBroadcast.<init>(TorrentBroadcast.scala:84)
>       at 
> org.apache.spark.broadcast.TorrentBroadcastFactory.newBroadcast(TorrentBroadcastFactory.scala:34)
>       at 
> org.apache.spark.broadcast.TorrentBroadcastFactory.newBroadcast(TorrentBroadcastFactory.scala:29)
>       at 
> org.apache.spark.broadcast.BroadcastManager.newBroadcast(BroadcastManager.scala:62)
>       at org.apache.spark.SparkContext.broadcast(SparkContext.scala:1051)



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