[ https://issues.apache.org/jira/browse/SPARK-36836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gengliang Wang reassigned SPARK-36836: -------------------------------------- Assignee: Richard Chen > "sha2" expression with bit_length of 224 returns incorrect results > ------------------------------------------------------------------ > > Key: SPARK-36836 > URL: https://issues.apache.org/jira/browse/SPARK-36836 > Project: Spark > Issue Type: Bug > Components: SQL > Affects Versions: 2.4.0, 3.0.0, 3.1.0, 3.2.0 > Reporter: Richard Chen > Assignee: Richard Chen > Priority: Major > Fix For: 3.2.0 > > > {{sha2(input, bit_length)}} returns incorrect results when {{bit_length == > 224}}. > > This bug seems to have been present since the {{sha2}} expression was > introduced in 1.5.0. > > Repro in spark shell: > {{spark.sql("SELECT sha2('abc', 224)").show()}} > > Spark currently returns a garbled string, consisting of invalid UTF: > {{#\t}"4�"�B�w��U�*��你���l��}} > The expected return value is: > {{23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7}} > > This appears to happen because the {{MessageDigest.digest()}} function > appears to return bytes intended to be interpreted as a {{BigInt}} rather > than a string. Thus, the output of {{MessageDigest.digest()}} must first be > interpreted as a {{BigInt}} and then transformed into a hex string. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org