prestodb/presto · error · java.lang.IllegalArgumentException

Object '%s' does not match type %s

Error message

Object '%s' does not match type %s

What it means

Block conversion guard: the object passed to nativeValueToBlock is not an instance of the Java type the declared Type expects (e.g. a Long where a Slice is required), so it cannot be written into the block.

Source

Thrown at presto-common/src/main/java/com/facebook/presto/common/Utils.java:38

import jakarta.annotation.Nullable;

import java.util.function.Supplier;

import static com.facebook.presto.common.type.TypeUtils.readNativeValue;
import static com.facebook.presto.common.type.TypeUtils.writeNativeValue;
import static java.lang.String.format;
import static java.util.Objects.requireNonNull;

public final class Utils
{
    private Utils()
    {
    }

    public static Block nativeValueToBlock(Type type, Object object)
    {
        if (object != null && !Primitives.wrap(type.getJavaType()).isInstance(object)) {
            throw new IllegalArgumentException(format("Object '%s' does not match type %s", object, type.getJavaType()));
        }
        BlockBuilder blockBuilder = type.createBlockBuilder(null, 1);
        writeNativeValue(type, blockBuilder, object);
        return blockBuilder.build();
    }

    public static Object blockToNativeValue(Type type, Block block)
    {
        return readNativeValue(type, block, 0);
    }

    public static void checkArgument(boolean expression)
    {
        if (!expression) {
            throw new IllegalArgumentException();
        }
    }

View on GitHub (pinned to 55bb57d202)

Solutions

1. Ensure the value producer and the declared Type agree on Java representation
2. Convert the object to the type's native Java class before conversion
3. Fix the type declaration used at the call site

When it happens

Trigger: Thrown at presto-common/src/main/java/com/facebook/presto/common/Utils.java:38 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of prestodb/presto@55bb57d202 (2026-09-04). Data as JSON: /api/errors/ece4cbf66dc5e8fa. Report an issue: GitHub.