Uwe Schindler created HADOOP-14586: -------------------------------------- Summary: org.apache.hadoop.util.Shell causes failure in <clinit> leading to almost all of Hadoop failing (next one StringUtils) Key: HADOOP-14586 URL: https://issues.apache.org/jira/browse/HADOOP-14586 Project: Hadoop Common Issue Type: Bug Components: common Environment: Java 9, build 175 (Java 9 relaese candidate as of June 25th, 2017) Reporter: Uwe Schindler Priority: Critical
You cannot use any Hadoop component anymore with the latest release candidate build of Java 9, because it fails with an StringIndexOutOfBoundsException in {{org.apache.hadoop.util.Shell#<clinit>}}. This leads to a whole cascade of failing classes (next in chain is StringUtils). The reason is that the release candidate build of Java 9 no longer has "-ea" in the version string and the system property "java.version" is now simply "9". This causes the following line to fail fatally: {code:java} private static boolean IS_JAVA7_OR_ABOVE = System.getProperty("java.version").substring(0, 3).compareTo("1.7") >= 0; {code} Analysis: - This code looks wrong, as comparing a version this way is incorrect. - The {{substring(0, 3)}} is completely useless, {{compareTo}} also works without it, although it is still an invalid way to compare a version. Maybe look at Lucene's source code (Constants.java) to have a better way in doing this! Sorry this is incredible to me! Hardcoding string bounds into a static initializer that are applied on a string that you have no control of... This issue breaks Apache Solr from working with Java 9, so I set it to "critical". We have to disable the whole Hadoop integration once Java 9 is detected. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org