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ASF subversion and git services commented on SOLR-10966: -------------------------------------------------------- Commit c221a596fe23088ae8cee1ff41e7dcf186e3b402 in lucene-solr's branch refs/heads/branch_6x from [~thetaphi] [ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=c221a59 ] SOLR-11261, SOLR-10966: Upgrade to Hadoop 2.7.4 to fix incompatibility with Java 9. This also reverts commit 85a27a231fdddb118ee178baac170da0097a02c0. > Add workaround for Hadoop-Common 2.7.2 incompatibility with Java 9 > ------------------------------------------------------------------ > > Key: SOLR-10966 > URL: https://issues.apache.org/jira/browse/SOLR-10966 > Project: Solr > Issue Type: Bug > Security Level: Public(Default Security Level. Issues are Public) > Components: Hadoop Integration, hdfs > Affects Versions: 6.6 > Reporter: Uwe Schindler > Assignee: Uwe Schindler > Priority: Critical > Fix For: 7.0, 6.7, 6.6.1 > > Attachments: SOLR-10966.patch, SOLR-10966.patch > > > I did some testing to work around HADOOP-14586 and found a temporary > solution. All tests pass with Java 9 build 175 (HDFS, Hadoop Auth / Kerberos). > This is a temporary workaround until we can upgrade Hadoop, see SOLR-10951 > The trick here is a hack: The Hadoop Shell class tries to parse > {{java.version}} system property, which is simply {{"9"}} on the Java 9 GA / > release candidate. It contains no dots and is shorter than 3 characters. > Hadoop tries to get the {{substring(0,3)}} and fails with an > IndexOutOfBoundsException in clinit. To work around this, we do the following > on early Solr startup / test startup (in a static analyzer, like we do for > logging initialization): > - set {{java.version}} system property to {{"1.9"}} > - initialize the Shell class in Hadoop > - restore the old value of {{java.version}} > The whole thing is done in a doPrivileged. I ran some tests on Policeman > Jenkins, everything works. The hack is only done, if _we_ detect Java 9. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org