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https://issues.apache.org/jira/browse/CASSANDRA-14200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16363450#comment-16363450
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Chris Lohfink commented on CASSANDRA-14200:
-------------------------------------------

may wanna just start with trunk and let a committer come around and make call 
for how far back versions should go

> NullPointerException when dumping sstable with null value for timestamp column
> ------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-14200
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14200
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Simon Zhou
>            Assignee: Simon Zhou
>            Priority: Major
>             Fix For: 3.0.x
>
>
> We have an sstable whose schema has a column of type timestamp and it's not 
> part of primary key. When dumping the sstable using sstabledump there is NPE 
> like this:
> {code:java}
> Exception in thread "main" java.lang.NullPointerException
> at java.util.Calendar.setTime(Calendar.java:1770)
> at java.text.SimpleDateFormat.format(SimpleDateFormat.java:943)
> at java.text.SimpleDateFormat.format(SimpleDateFormat.java:936)
> at java.text.DateFormat.format(DateFormat.java:345)
> at 
> org.apache.cassandra.db.marshal.TimestampType.toJSONString(TimestampType.java:93)
> at 
> org.apache.cassandra.tools.JsonTransformer.serializeCell(JsonTransformer.java:442)
> at 
> org.apache.cassandra.tools.JsonTransformer.serializeColumnData(JsonTransformer.java:376)
> at 
> org.apache.cassandra.tools.JsonTransformer.serializeRow(JsonTransformer.java:280)
> at 
> org.apache.cassandra.tools.JsonTransformer.serializePartition(JsonTransformer.java:215)
> at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
> at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
> at java.util.Iterator.forEachRemaining(Iterator.java:116)
> at 
> java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
> at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
> at 
> java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
> at 
> java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
> at 
> java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
> at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
> at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
> at org.apache.cassandra.tools.JsonTransformer.toJson(JsonTransformer.java:104)
> at org.apache.cassandra.tools.SSTableExport.main(SSTableExport.java:242){code}
> The reason is that we use a null Date when there is no value for this column:
> {code}
>     public Date deserialize(ByteBuffer bytes)
>     {
>         return bytes.remaining() == 0 ? null : new 
> Date(ByteBufferUtil.toLong(bytes));
>     }
> {code}
> It seems that we should not deserialize columns with null values.



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