运行以下命令时出现此错误：
$ ./loadRestAPI.sh -n wdq -d `pwd`/data/split/wikidump-000000001.ttl.gz
见https://github.com/wikimedia/wikidata-query-rdf/blob/master/docs/getting-started.md
Loading with properties...
quiet=false
verbose=0
closure=false
durableQueues=true
#Needed for quads
#defaultGraph=
com.bigdata.rdf.store.DataLoader.flush=false
com.bigdata.rdf.store.DataLoader.bufferCapacity=100000
com.bigdata.rdf.store.DataLoader.queueCapacity=10
#Namespace to load
namespace=wdq
#Files to load
fileOrDirs=/data/split
#Property file (if creating a new namespace)
propertyFile=/home/tsc/projects/TestSPARQL/wikidata-query-rdf-0.2.1/dist/target/service-0.2.1/RWStore.properties
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"/>
<title>Error 503 </title>
</head>
<body>
<h2>HTTP ERROR: 503</h2>
<p>Problem accessing /bigdata/dataloader. Reason:
<pre> Service Unavailable</pre></p>
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</body>
</html>
它在使用'sudo'运行Blazegraph时有效...