I have one shapefile , multiple threads are running the following code:
FileDataStore store = new IndexedShapefileDataStore(tzUrl, false,
true); <======
ustzFeatureSource = store.getFeatureSource();
collection = ustzFeatureSource.getFeatures(query);
problem is with the first line. since I gave createSpatialIndex=true, each
thread actually tries to create its own index,
and ran into issues with locks:
SEVERE: Unable to delete the file: /mnt/shapes/biggeo.gml_POSTAL_CODE.qix
when attempting to replace with temporary copy.
Feb 3, 2012 3:35:25 AM org.geotools.data.shapefile.StorageFile
replaceOriginals
SEVERE: The problem is almost certainly caused by the fact that there are
still locks being held on the shapefiles. Probably a r
Feb 3, 2012 3:35:25 AM org.geotools.data.shapefile.ShpFiles
logCurrentLockers
SEVERE: The following locker still has a lock: write on
file:/mnt/shapes/biggeo.gml_POSTAL_CODE.shp by StorageFile: biggeo3034272
Feb 3, 2012 3:35:25 AM org.geotools.data.shapefile.ShpFiles
logCurrentLockers
SEVERE: The following locker still has a lock: write on
file:/mnt/shapes/biggeo.gml_POSTAL_CODE.qix by StorageFile: biggeo3034272
Feb 3, 2012 3:35:25 AM
org.geotools.data.shapefile.indexed.IndexedShapefileDataStore
createSpatialIndex
SEVERE: null
Feb 3, 2012 3:35:26 AM org.geotools.data.shapefile.StorageFile
replaceOriginals
SEVERE: Unable to delete the file: /mnt/shapes/biggeo.gml_COUNTY.qix when
attempting to replace with temporary copy.
Feb 3, 2012 3:35:26 AM org.geotools.data.shapefile.StorageFile
replaceOriginals
SEVERE: The problem is almost certainly caused by the fact that there are
still locks being held on the shapefiles. Probably a r
Feb 3, 2012 3:35:26 AM org.geotools.data.shapefile.ShpFiles
logCurrentLockers
SEVERE: The following locker still has a lock: write on
file:/mnt/shapes/biggeo.gml_COUNTY.shp by StorageFile: biggeo304623062369
Feb 3, 2012 3:35:26 AM org.geotools.data.shapefile.ShpFiles
logCurrentLockers
Task Logs: 'attempt_201201252018_0018_m_000000_0' (2/30)
SEVERE: The following locker still has a lock: write on
file:/mnt/shapes/biggeo.gml_COUNTY.qix by StorageFile: biggeo304623062369
Feb 3, 2012 3:35:26 AM
org.geotools.data.shapefile.indexed.IndexedShapefileDataStore
createSpatialIndex
SEVERE: null
Feb 3, 2012 3:35:47 AM org.geotools.data.shapefile.StorageFile
replaceOriginals
SEVERE: Unable to delete the file: /mnt/shapes/biggeo.gml_POSTAL_CODE.qix
when attempting to replace with temporary copy.
Feb 3, 2012 3:35:47 AM org.geotools.data.shapefile.StorageFile
replaceOriginals
SEVERE: The problem is almost certainly caused by the fact that there are
still locks being held on the shapefiles. Probably a r
Feb 3, 2012 3:35:47 AM org.geotools.data.shapefile.ShpFiles
logCurrentLockers
SEVERE: The following locker still has a lock: write on
file:/mnt/shapes/biggeo.gml_POSTAL_CODE.shp by StorageFile: biggeo5047038
Feb 3, 2012 3:35:47 AM org.geotools.data.shapefile.ShpFiles
logCurrentLockers
SEVERE: The following locker still has a lock: write on
file:/mnt/shapes/biggeo.gml_POSTAL_CODE.qix by StorageFile: biggeo5047038
Feb 3, 2012 3:35:47 AM
org.geotools.data.shapefile.indexed.IndexedShapefileDataStore
createSpatialIndex
SEVERE: null
Feb 3, 2012 3:35:49 AM org.geotools.data.shapefile.StorageFile
replaceOriginals
SEVERE: Unable to delete the file: /mnt/shapes/biggeo.gml_COUNTY.qix when
attempting to replace with temporary copy.
Feb 3, 2012 3:35:49 AM org.geotools.data.shapefile.StorageFile
replaceOriginals
SEVERE: The problem is almost certainly caused by the fact that there are
still locks being held on the shapefiles. Probably a r
Feb 3, 2012 3:35:49 AM org.geotools.data.shapefile.ShpFiles
logCurrentLockers
Feb 3, 2012 3:35:49 AM org.geotools.data.shapefile.StorageFile
replaceOriginals
SEVERE: Unable to delete the file: /mnt/shapes/biggeo.gml_COUNTY.qix when
attempting to replace with temporary copy.
Feb 3, 2012 3:35:49 AM org.geotools.data.shapefile.StorageFile
replaceOriginals
SEVERE: The problem is almost certainly caused by the fact that there are
still locks being held on the shapefiles. Probably a r
Feb 3, 2012 3:35:49 AM org.geotools.data.shapefile.ShpFiles
logCurrentLockers
SEVERE: The following locker still has a lock: write on
file:/mnt/shapes/biggeo.gml_COUNTY.shp by StorageFile: biggeo834418033700
Feb 3, 2012 3:35:49 AM org.geotools.data.shapefile.ShpFiles
logCurrentLockers
SEVERE: The following locker still has a lock: write on
file:/mnt/shapes/biggeo.gml_COUNTY.qix by StorageFile: biggeo834418033700
Feb 3, 2012 3:35:49 AM
org.geotools.data.shapefile.indexed.IndexedShapefileDataStore
createSpatialIndex
SEVERE: null
java.util.NoSuchElementException: Could not aquire
feature:org.geotools.data.DataSourceException: Error querying QuadTree
at
org.geotools.data.store.NoContentIterator.next(NoContentIterator.java:58)
at
org.geotools.data.store.NoContentIterator.next(NoContentIterator.java:43)
at
org.geotools.feature.collection.DelegateFeatureIterator.next(DelegateFeatureIterator.java:58)
at
citygridmedia.geography.pig.GeoFinder.searchSingleGeo(GeoFinder.java:162)
at
citygridmedia.geography.pig.GeoFinder._searchPrimaryGeo(GeoFinder.java:126)
at
citygridmedia.geography.pig.GeoFinder.searchPrimaryGeo(GeoFinde at
citygridmedia.geography.pig.PrimaryGeocoder.exec(PrimaryGeocoder.java:49)
at
citygridmedia.geography.pig.PrimaryGeocoder.exec(PrimaryGeocoder.java:11)
so it looks I can have only one ShapefileDataStore obj for one file, that's
fine, then I can let the multiple threads share one datastore obj, but
then the question is, is the ShapefileDataStore obj thread-safe? and also
the FeatureSource obj returned by the DataStore?
thanks a lot
Yang
------------------------------------------------------------------------------
Try before you buy = See our experts in action!
The most comprehensive online learning library for Microsoft developers
is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
Metro Style Apps, more. Free future releases when you subscribe now!
http://p.sf.net/sfu/learndevnow-dev2
_______________________________________________
GeoTools-GT2-Users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
