I've seen this happen a couple of times now with 1.172. It didn't happen in 1.150.

java.lang.OutOfMemoryError: Java heap space
at java.io.BufferedReader.readLine(BufferedReader.java:331)
at java.io.BufferedReader.readLine(BufferedReader.java:362)
at
org.tmatesoft.svn.core.internal.wc.admin.SVNAdminArea14.readEntry(SVNAdminArea14.java:618)
at
org.tmatesoft.svn.core.internal.wc.admin.SVNAdminArea14.fetchEntries(SVNAdminArea14.java:535)
at
org.tmatesoft.svn.core.internal.wc.admin.SVNAdminArea.loadEntries(SVNAdminArea.java:1156)
at
org.tmatesoft.svn.core.internal.wc.admin.SVNAdminArea.getEntry(SVNAdminArea.java:977)
at
org.tmatesoft.svn.core.internal.wc.admin.SVNAdminArea.tweakEntry(SVNAdminArea.java:270)
at
org.tmatesoft.svn.core.internal.wc.SVNWCManager.tweakEntries(SVNWCManager.java:280)
at
org.tmatesoft.svn.core.internal.wc.SVNWCManager.tweakEntries(SVNWCManager.java:301)
at
org.tmatesoft.svn.core.internal.wc.SVNWCManager.tweakEntries(SVNWCManager.java:301)
at
org.tmatesoft.svn.core.internal.wc.SVNWCManager.tweakEntries(SVNWCManager.java:301)
at
org.tmatesoft.svn.core.internal.wc.SVNWCManager.tweakEntries(SVNWCManager.java:301)
at
org.tmatesoft.svn.core.internal.wc.SVNWCManager.updateCleanup(SVNWCManager.java:271)
at
org.tmatesoft.svn.core.internal.wc.SVNUpdateEditor.closeEdit(SVNUpdateEditor.java:368)
at
org.tmatesoft.svn.core.internal.wc.SVNCancellableEditor.closeEdit(SVNCancellableEditor.java:145)
at
org.tmatesoft.svn.core.internal.io.dav.handlers.DAVEditorHandler.endElement(DAVEditorHandler.java:270)
at
org.tmatesoft.svn.core.internal.io.dav.handlers.BasicDAVHandler.endElement(BasicDAVHandler.java:70)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:633)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanEndElement(XMLNSDocumentScannerImpl.java:719)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1685)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:368)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:834)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:148)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1242)
at
org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.readData(HTTPConnection.java:646)
at
org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.readData(HTTPConnection.java:611)
at
org.tmatesoft.svn.core.internal.io.dav.http.HTTPRequest.dispatch(HTTPRequest.java:196)
at
org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:289)
at
org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:234)
at
org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:222)
at
org.tmatesoft.svn.core.internal.io.dav.DAVConnection.doReport(DAVConnection.java:219)