Hello:
I have started using storm with apache tika for text extraction and I
encountered a FileNotFoundException emanating from the download-storm-code
method in supervisor.clj when running in local mode (I am able to submit to
a remote cluster that I created):
7887 [Thread-5] INFO backtype.storm.daemon.supervisor - Downloading code
for storm id LocalTopology-1-1405005513 from
/tmp/0de4961a-8694-4646-bb3c-b8e2d49da288/nimbus/stormdist/LocalTopology-1-1405005513
7906 [Thread-5] INFO backtype.storm.daemon.supervisor - Copying resources
at
jar:file:/home/milad/.m2/repository/edu/ucar/netcdf/4.2-min/netcdf-4.2-min.jar!/resources
to
/tmp/61a2365c-f99f-49d6-9bb3-93f84e237fd2/supervisor/stormdist/LocalTopology-1-1405005513/resources
7907 [Thread-5] ERROR backtype.storm.event - Error when processing event
java.io.FileNotFoundException: Source
'file:/home/milad/.m2/repository/edu/ucar/netcdf/4.2-min/netcdf-4.2-min.jar!/resources'
does not exist
at org.apache.commons.io.FileUtils.copyDirectory(FileUtils.java:1368)
~[commons-io-2.4.jar:2.4]
at org.apache.commons.io.FileUtils.copyDirectory(FileUtils.java:1261)
~[commons-io-2.4.jar:2.4]
at org.apache.commons.io.FileUtils.copyDirectory(FileUtils.java:1230)
~[commons-io-2.4.jar:2.4]
at backtype.storm.daemon.supervisor$fn__6392.invoke(supervisor.clj:535)
~[storm-core-0.9.3-incubating-SNAPSHOT.jar:0.9.3-incubating-SNAPSHOT]
at clojure.lang.MultiFn.invoke(MultiFn.java:236) ~[clojure-1.5.1.jar:na]
at
backtype.storm.daemon.supervisor$mk_synchronize_supervisor$this__6286.invoke(supervisor.clj:327)
~[storm-core-0.9.3-incubating-SNAPSHOT.jar:0.9.3-incubating-SNAPSHOT]
at backtype.storm.event$event_manager$fn__2391.invoke(event.clj:39)
~[storm-core-0.9.3-incubating-SNAPSHOT.jar:0.9.3-incubating-SNAPSHOT]
at clojure.lang.AFn.run(AFn.java:24) [clojure-1.5.1.jar:na]
at java.lang.Thread.run(Thread.java:744) [na:1.7.0_55]
7920 [Thread-5] INFO backtype.storm.util - Halting process: ("Error when
processing an event")
In this case, the download-storm-code method in supervisor.clj is trying to
load resources from the URL:
jar:file:/home/milad/.m2/repository/edu/ucar/netcdf/4.2-min/netcdf-4.2-min.jar!/resources
The relevant code in download-storm-code seems to be:
(log-message "Copying resources at " (str url) " to " target-dir)
(FileUtils/copyDirectory (File. (.getFile url)) (File. target-dir))
Since the url is of the form:
jar:file:/home/milad/.m2/repository/edu/ucar/netcdf/4.2-min/netcdf-4.2-min.jar!/resources
the getFile method simply returns:
file:/home/milad/.m2/repository/edu/ucar/netcdf/4.2-min/netcdf-4.2-min.jar!/resources
which is incorrect. I was able to produce a very hacky fix for this by
tweaking download-storm-code. I changed this code:
(log-message "Copying resources at " (str url) " to " target-dir)
(FileUtils/copyDirectory (File. (.getFile url)) (File. target-dir))
to:
(log-message "Copying resources at " (str url) " to " target-dir)
(if (.startsWith (str url) "jar:file:" )
(extract-dir-from-jar (.getFile (.getJarFileURL (.openConnection url)))
RESOURCES-SUBDIR stormroot)
(FileUtils/copyDirectory (File. (.getFile url)) (File. target-dir)))
)
and this seems to work. I am very new to storm and clojure (this is my
first experience) so I am not sure if this fix is correct, or if I am just
using storm incorrectly. Any advice on how to proceed, should I submit this
as a pull request on github?
Thanks!
Milad
