Streams Java 8 and Chronicle map

[Siva Sekhar Nalluri]

Hi,

I am trying to read CSV file and building map out of it. 

sample.csv is something like this

a, a, a

a, ab, ads, dsd

we, sd, sd, sd

sd, sd

my requirement is first element is key and rest of the element is value as list 

below code its working fine but includes first element

ChronicleMap<String, List<String>> cMap = ChronicleMapBuilder.of(String.class,List.class).create()

Stream<String> stream = Files.lines(Paths.get("sample.csv"));

 =(Map<String, List<String>>) 

stream

.filter(s -> !s.trim().isEmpty())

.map(line -> Arrays.asList(line.split(",")))

                                .forEach(a -> cmaps.put(a.get(0), a));

ChronicleMap<String, List<String>> cMap = ChronicleMapBuilder.of(String.class,List.class).create()

Stream<String> stream = Files.lines(Paths.get("sample.csv"));

 =(Map<String, List<String>>) 

stream

.filter(s -> !s.trim().isEmpty())

.map(line -> Arrays.asList(line.split(",")))

                                .forEach(a -> cmaps.put(a.get(0), a.subList(1,a.size())));

above code is giving me the java.lang.IllegalStateException : we try to figure out size of objets in serialized orm, but it exceeds 16777216bytes. we assume this is a error and  at throw exception at this point. if you really want larger keys/values, use ChronicleMapBuilder.KeySize(int)/valueSize(int) configurations

Whats wrong in the above code and how can I get the requirement fulfilled.

any help is appreciated.

Best Regards, 

Siva

[Roman Leventov]

This is because List.subList() you provide as values are not Serializable. I agree the error message is confusing. Write a custom serializer for any List, or wrap as cmap.put(a.get(0), new arrayList(a.sublist(1, a.size())))

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[Siva Sekhar Nalluri]

Thanks you for the quick response.

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Best regards,

Siva Sekhar Nalluri