Ian Dickinson created JENA-612:
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Summary: Fuseki does not log an error when failing to open a TDB
dataset
Key: JENA-612
URL: https://issues.apache.org/jira/browse/JENA-612
Project: Apache Jena
Issue Type: Improvement
Components: Fuseki
Affects Versions: Fuseki 1.0.0
Reporter: Ian Dickinson
Priority: Minor
Steps to recreate:
1. Create a TDB dataset owned by user A, with no write permission for other or
group.
2. Start fuseki via start-stop-daemon, per the fuseki init.d script provided in
the distribution, with $FUSEKI_USER set to be a user other than A and --loc
pointing to the dataset from step 1.
3. Fuseki starts, but then silently dies with no diagnostic.
Analysis
The --background flag in the start-stop-daemon call causes all stdout and
stderr output to get silently swallowed. Fuseki does not log the failure to
open the dataset to the log file, so the effect is that the daemon process
terminates with no obvious explanation or diagnostic.
What I would like to happen:
Catch the FileException and make an entry in the Fuseki log.
Stack trace for reference:
com.hp.hpl.jena.tdb.base.file.FileException: Failed to open:
/var/data-stores/transport/tdb/node2id.idn (mode=rw)
at
com.hp.hpl.jena.tdb.base.file.ChannelManager.open$(ChannelManager.java:82)
at
com.hp.hpl.jena.tdb.base.file.ChannelManager.openref$(ChannelManager.java:56)
at
com.hp.hpl.jena.tdb.base.file.ChannelManager.acquire(ChannelManager.java:45)
at com.hp.hpl.jena.tdb.base.file.FileBase.<init>(FileBase.java:61)
at com.hp.hpl.jena.tdb.base.file.FileBase.<init>(FileBase.java:50)
at com.hp.hpl.jena.tdb.base.file.FileBase.create(FileBase.java:45)
at
com.hp.hpl.jena.tdb.base.file.BlockAccessBase.<init>(BlockAccessBase.java:46)
at
com.hp.hpl.jena.tdb.base.file.BlockAccessMapped.<init>(BlockAccessMapped.java:63)
at
com.hp.hpl.jena.tdb.base.block.BlockMgrFactory.createMMapFile(BlockMgrFactory.java:90)
at
com.hp.hpl.jena.tdb.base.block.BlockMgrFactory.createFile(BlockMgrFactory.java:80)
at
com.hp.hpl.jena.tdb.base.block.BlockMgrFactory.create(BlockMgrFactory.java:58)
at
com.hp.hpl.jena.tdb.setup.Builder$BlockMgrBuilderStd.buildBlockMgr(Builder.java:196)
at
com.hp.hpl.jena.tdb.setup.Builder$RangeIndexBuilderStd.createBPTree(Builder.java:165)
at
com.hp.hpl.jena.tdb.setup.Builder$RangeIndexBuilderStd.buildRangeIndex(Builder.java:134)
at
com.hp.hpl.jena.tdb.setup.Builder$IndexBuilderStd.buildIndex(Builder.java:112)
at
com.hp.hpl.jena.tdb.setup.Builder$NodeTableBuilderStd.buildNodeTable(Builder.java:85)
at
com.hp.hpl.jena.tdb.setup.DatasetBuilderStd$NodeTableBuilderRecorder.buildNodeTable(DatasetBuilderStd.java:382)
at
com.hp.hpl.jena.tdb.setup.DatasetBuilderStd.makeNodeTable(DatasetBuilderStd.java:293)
at
com.hp.hpl.jena.tdb.setup.DatasetBuilderStd._build(DatasetBuilderStd.java:159)
at
com.hp.hpl.jena.tdb.setup.DatasetBuilderStd.build(DatasetBuilderStd.java:149)
at
com.hp.hpl.jena.tdb.setup.DatasetBuilderStd.build(DatasetBuilderStd.java:64)
at com.hp.hpl.jena.tdb.StoreConnection.make(StoreConnection.java:217)
at
com.hp.hpl.jena.tdb.transaction.DatasetGraphTransaction.<init>(DatasetGraphTransaction.java:75)
at com.hp.hpl.jena.tdb.sys.TDBMaker._create(TDBMaker.java:57)
at
com.hp.hpl.jena.tdb.sys.TDBMaker.createDatasetGraphTransaction(TDBMaker.java:45)
at
com.hp.hpl.jena.tdb.TDBFactory._createDatasetGraph(TDBFactory.java:104)
at com.hp.hpl.jena.tdb.TDBFactory.createDatasetGraph(TDBFactory.java:73)
at com.hp.hpl.jena.tdb.TDBFactory.createDatasetGraph(TDBFactory.java:69)
at
org.apache.jena.fuseki.FusekiCmd.processModulesAndArgs(FusekiCmd.java:266)
at arq.cmdline.CmdArgModule.process(CmdArgModule.java:51)
at arq.cmdline.CmdMain.mainMethod(CmdMain.java:100)
at arq.cmdline.CmdMain.mainRun(CmdMain.java:63)
at arq.cmdline.CmdMain.mainRun(CmdMain.java:50)
at org.apache.jena.fuseki.FusekiCmd.main(FusekiCmd.java:141)
Caused by: java.io.FileNotFoundException:
/var/data-stores/transport/tdb/node2id.idn (Permission denied)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:233)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:118)
at
com.hp.hpl.jena.tdb.base.file.ChannelManager.open$(ChannelManager.java:79)
... 33 more
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