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私は、次のコマンドを実行しようとしました:のNeo4j-adminのインポート:インポートエラー:ストア・ファイルを開くことができません:../data/databases/graph.db/neostore.propertystore.db.index
$ ../bin/neo4j-admin import --mode csv -- database graph.db --nodes head.csv,file1.csv
しかし、私はこのエラーを受け取りました:
Import error: Unable to open store file: ../data/databases/graph.db/neostore.propertystore.db.index
Caused by:Unable to open store file: ../data/databases/graph.db/neostore.propertystore.db.index
org.neo4j.kernel.impl.store.UnderlyingStorageException: Unable to open store file: ../data/databases/graph.db/neostore.propertystore.db.index
at org.neo4j.kernel.impl.store.CommonAbstractStore.checkAndLoadStorage(CommonAbstractStore.java:209)
at org.neo4j.kernel.impl.store.CommonAbstractStore.initialise(CommonAbstractStore.java:133)
at org.neo4j.kernel.impl.store.NeoStores.initialize(NeoStores.java:262)
at org.neo4j.kernel.impl.store.NeoStores.createPropertyKeyTokenStore(NeoStores.java:553)
at org.neo4j.kernel.impl.store.StoreType$4.open(StoreType.java:65)
at org.neo4j.kernel.impl.store.StoreType$4.open(StoreType.java:60)
at org.neo4j.kernel.impl.store.NeoStores.openStore(NeoStores.java:255)
at org.neo4j.kernel.impl.store.NeoStores.getOrCreateStore(NeoStores.java:300)
at org.neo4j.kernel.impl.store.NeoStores.<init>(NeoStores.java:144)
at org.neo4j.kernel.impl.store.StoreFactory.openNeoStores(StoreFactory.java:169)
at org.neo4j.kernel.impl.store.StoreFactory.openAllNeoStores(StoreFactory.java:133)
at org.neo4j.unsafe.impl.batchimport.store.BatchingNeoStores.<init>(BatchingNeoStores.java:118)
at org.neo4j.unsafe.impl.batchimport.store.BatchingNeoStores.batchingNeoStores(BatchingNeoStores.java:189)
at org.neo4j.unsafe.impl.batchimport.ParallelBatchImporter.getBatchingNeoStores(ParallelBatchImporter.java:272)
at org.neo4j.unsafe.impl.batchimport.ParallelBatchImporter.doImport(ParallelBatchImporter.java:167)
at org.neo4j.tooling.ImportTool.doImport(ImportTool.java:510)
at org.neo4j.tooling.ImportTool.main(ImportTool.java:443)
at org.neo4j.tooling.ImportTool.main(ImportTool.java:354)
Caused by: java.io.FileNotFoundException: /mnt/data3/kaushik2/data/databases/graph.db/neostore.propertystore.db.index (Too many open files)
at java.io.RandomAccessFile.open(RandomAccessFile.java:333)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:257)
at org.neo4j.io.fs.DefaultFileSystemAbstraction.open(DefaultFileSystemAbstraction.java:68)
at org.neo4j.io.fs.DefaultFileSystemAbstraction.open(DefaultFileSystemAbstraction.java:53)
at org.neo4j.io.pagecache.impl.SingleFilePageSwapper.<init>(SingleFilePageSwapper.java:152)
at org.neo4j.io.pagecache.impl.SingleFilePageSwapperFactory.createPageSwapper(SingleFilePageSwapperFactory.java:71)
at org.neo4j.io.pagecache.impl.muninn.MuninnPagedFile.<init>(MuninnPagedFile.java:135)
at org.neo4j.io.pagecache.impl.muninn.MuninnPageCache.map(MuninnPageCache.java:362)
at org.neo4j.kernel.impl.store.CommonAbstractStore.checkAndLoadStorage(CommonAbstractStore.java:182)
... 17 more
このコマンドに使用されるパラメータと設定are here。理由は何でしょうか?