Github user kevinyu98 commented on a diff in the pull request:
https://github.com/apache/spark/pull/12646#discussion_r77079247
--- Diff:
common/unsafe/src/main/java/org/apache/spark/unsafe/types/UTF8String.java ---
@@ -488,6 +543,28 @@ public UTF8String trimLeft() {
}
}
+ /**
+ * Removes all specified trim character from the beginning of a string
+ * @param trimChar the trim character
+ */
+ public UTF8String trimLeft(UTF8String trimChar) {
+ int numTrimBytes = trimChar.numBytes;
+ if (numTrimBytes == 0) {
+ return this;
+ }
+ int s = 0;
+ // skip all the consecutive matching character in the left side
+ while(s < this.numBytes && s == this.find(trimChar, s)) {
+ s += numTrimBytes;
+ }
+ if (s == this.numBytes) {
+ // empty string
+ return UTF8String.fromBytes(new byte[0]);
--- End diff --
sure, I will change it.
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