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[SPARK-35005][SQL] Improve error msg if UTF8String concatWs length overflow #32106

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[SPARK-35005][SQL] Improve error msg if UTF8String concatWs length overflow #32106

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fceb65b
[SPARK-35005][SQL] Improve error msg if UTF8String concatWs length ov…
ulysses-you Apr 9, 2021
7411b6e
use math
ulysses-you Apr 12, 2021
9081799
fix
ulysses-you Apr 12, 2021
73f4824
inline
ulysses-you Apr 12, 2021
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5 changes: 3 additions & 2 deletions common/unsafe/src/main/java/org/apache/spark/unsafe/types/UTF8String.java
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Original file line number Diff line number Diff line change
Expand Up @@ -993,7 +993,7 @@ public static UTF8String concatWs(UTF8String separator, UTF8String... inputs) {
return null;
}

int numInputBytes = 0; // total number of bytes from the inputs
long numInputBytes = 0L; // total number of bytes from the inputs
int numInputs = 0; // number of non-null inputs
for (int i = 0; i < inputs.length; i++) {
if (inputs[i] != null) {
Expand All @@ -1009,7 +1009,8 @@ public static UTF8String concatWs(UTF8String separator, UTF8String... inputs) {

// Allocate a new byte array, and copy the inputs one by one into it.
// The size of the new array is the size of all inputs, plus the separators.
final byte[] result = new byte[numInputBytes + (numInputs - 1) * separator.numBytes];
int resultSize = Math.toIntExact(numInputBytes + (numInputs - 1) * (long)separator.numBytes);
final byte[] result = new byte[resultSize];
int offset = 0;

for (int i = 0, j = 0; i < inputs.length; i++) {
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