I've filed https://issues.apache.org/jira/browse/HDFS-3580 and attached the patch.
I'd really appreciate it if someone could explain what the problem is, why the patch fixes it, and whether this is a bug in OpenJDK (that it does not accept a valid program) or a bug in Sun JDK (that it does accept an incorrect program). -andy On Fri, Jun 29, 2012 at 12:01 PM, Andy Isaacson <a...@cloudera.com> wrote: > I ran into this as well, and am prepping a patch. Lars, if you could file > the Jira explaining why s/boolean/Boolean/ is the right fix, I'll test and > submit the patch. > > -andy > > > On Fri, Jun 29, 2012 at 11:08 AM, Alejandro Abdelnur <t...@cloudera.com>wrote: > >> This change is from HDFS-3481, the wrong JIRA number is because I made >> a mistake in the commit message. >> >> I can put a patch to fix this, but don't have OpenJDK to test it. It >> would be better if somebody with OpenJDK takes care of it and I'll >> review it. >> >> Thx >> >> On Fri, Jun 29, 2012 at 11:01 AM, Arun C Murthy <a...@hortonworks.com> >> wrote: >> > HDFS-3113 is committed? Or, are you running with the patch yourself? >> > >> > It's still PA and I see Daryn reviewing it yet... >> > >> > Arun >> > >> > On Jun 28, 2012, at 10:27 PM, lars hofhansl wrote: >> > >> >> Since HDFS-3113 was integrated into Hadoop-2 I get the compilation >> errors of the following type: >> >> >> >> [ERROR] >> /home/lars/dev/hadoop-2/hadoop-hdfs-project/hadoop-hdfs-httpfs/src/main/java/org/apache/hadoop/fs/http/server/HttpFSServer.java:[407,36] >> incompatible types; no instance(s) of type variable(s) V exist so that V >> conforms to boolean >> >> >> >> >> >> Indeed at line 407 I see: >> >> >> >> boolean hasData = params.get(DataParam.NAME, DataParam.class); >> >> >> >> >> >> When I change that to >> >> Boolean hasData = params.get(DataParam.NAME, DataParam.class); >> >> >> >> >> >> instead (along with long to Long, short to Short, etc, later in that >> file), everything compiles fine. >> >> >> >> $ javac -version >> >> javac 1.6.0_24 >> >> >> >> >> >> $ java -version >> >> java version "1.6.0_24" >> >> OpenJDK Runtime Environment (IcedTea6 1.11.3) >> (fedora-67.1.11.3.fc16-x86_64) >> >> OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode) >> >> >> >> Apparently OpenJDK gets mixed up on the type inference here. Can we >> change this in the way I suggest so that Hadoop-2 (and presumably trunk) >> can be >> >> compiled with OpenJDK? >> >> I'm happy to create a jira and (trivial) patch. >> >> >> >> >> >> Thanks. >> >> >> >> -- Lars >> >> >> > >> > -- >> > Arun C. Murthy >> > Hortonworks Inc. >> > http://hortonworks.com/ >> > >> > >> >> >> >> -- >> Alejandro >> > >
