CODEWITHSUNDEEP
javasolrsolrj
Manhal Daaboul
Manhal Daaboul

Reputation: 62

solr saving wrong value of large long

I have a solr schema with a field in long type

<field name="source_raw_hash" type="long" indexed="true" stored="true"/>

the long type in the schema is the default:

<fieldType name="long" class="solr.TrieLongField" precisionStep="0" positionIncrementGap="0"/>

I am saving to the index in solrJ, the value: 3954983690244748504 to this field, but it's being saved as 3954983690244748300

I am having the same with different large values.

Tried change the type to double with is 64 as well, didn't work also.

I am using solr 5.3 and solrj 5.3

Upvotes: 1

Views: 639

Answers (1)

MatsLindh
MatsLindh

Reputation: 52882

You're not indexing longs, you're indexing doubles. Meaning that before the content hits Solr, you're probably storing it as a double somewhere.

When stored as a double, 3954983690244748504 can only be expressed as 3.9549836902447483e+18 (or without the scientific notation, 3954983690244748300), which matches your second number.

doubles are not exact, they're an approximation - also when it comes to very large numbers.

Upvotes: 1

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