JIRA Cloud import fails due to 'ERROR: unexpected data beyond EOF ...'

Error Messages: [Error importing data: org.xml.sax.SAXException: com.atlassian.jira.exception.DataAccessException: org.ofbiz.core.entity.GenericEntityException: while inserting: [GenericEntity:EntityProperty][propertyKey,cecb847c-a45b-3919-b565-44cbd9367482][entityName,fusion.caches.issue][created,2014-10-21 21:15:21.325][entityId,26603][id,179114][updated,2014-10-21 21:15:22.348][value,{"value":{"targets":{"JRADEV-5589":[{"type":{"id":"repository"},"objects":[]},{"type":{"id":"branch"},"objects":[]}],"JDEV-5589":[{"type":{"id":"repository"},"objects":[]},{"type":{"id":"branch"},"objects":[]}]}},"expiry":1413888322346}] (SQL Exception while executing the following:INSERT INTO public.entity_property (ID, ENTITY_NAME, ENTITY_ID, PROPERTY_KEY, CREATED, UPDATED, json_value) VALUES (?, ?, ?, ?, ?, ?, ?) (ERROR: unexpected data beyond EOF in block 6250 of relation base/16386/16608
   Hint: This has been seen to occur with buggy kernels; consider updating your system.))
 ...
java.lang.Exception: com.atlassian.jira.exception.DataAccessException: org.ofbiz.core.entity.GenericEntityException: while inserting: [GenericEntity:EntityProperty][propertyKey,cecb847c-a45b-3919-b565-44cbd9367482][entityName,fusion.caches.issue][created,2014-10-21 21:15:21.325][entityId,26603][id,179114][updated,2014-10-21 21:15:22.348][value,{"value":{"targets":{"JRADEV-5589":[{"type":{"id":"repository"},"objects":[]},{"type":{"id":"branch"},"objects":[]}],"JDEV-5589":[{"type":{"id":"repository"},"objects":[]},{"type":{"id":"branch"},"objects":[]}]}},"expiry":1413888322346}] (SQL Exception while executing the following:INSERT INTO public.entity_property (ID, ENTITY_NAME, ENTITY_ID, PROPERTY_KEY, CREATED, UPDATED, json_value) VALUES (?, ?, ?, ?, ?, ?, ?) (ERROR: unexpected data beyond EOF in block 6250 of relation base/16386/16608
   Hint: This has been seen to occur with buggy kernels; consider updating your system.))]

Create failed - retrying. Attempt [5] out of [5]
org.ofbiz.core.entity.GenericEntityException: while inserting: [GenericEntity:OSCurrentStepPrev][previousId,226600][id,227114] (SQL Exception while executing the following:INSERT INTO public.OS_CURRENTSTEP_PREV (ID, PREVIOUS_ID) VALUES (?, ?) (ERROR: unexpected data beyond EOF in block 876 of relation base/16385/17092
  Hint: This has been seen to occur with buggy kernels; consider updating your system.))
	at org.ofbiz.core.entity.GenericDAO.singleInsert(GenericDAO.java:213)
	at org.ofbiz.core.entity.GenericDAO.insert(GenericDAO.java:178)
	at org.ofbiz.core.entity.GenericHelperDAO.create(GenericHelperDAO.java:83)
	at org.ofbiz.core.entity.GenericDelegator.create(GenericDelegator.java:556)
	at org.ofbiz.core.entity.GenericDelegator.create(GenericDelegator.java:542)
	at org.ofbiz.core.entity.GenericValue.create(GenericValue.java:97)
	at com.atlassian.jira.bc.dataimport.OfbizImportHandler.createWithRetry(OfbizImportHandler.java:559)
	at com.atlassian.jira.bc.dataimport.OfbizImportHandler.lambda$createValue$0(OfbizImportHandler.java:537)
	at com.atlassian.jira.bc.dataimport.OfbizImportHandler$$Lambda$1110/28503440.run(Unknown Source)
	at com.atlassian.jira.util.concurrent.BoundedExecutor$1.run(BoundedExecutor.java:50)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.ofbiz.core.entity.GenericDataSourceException: SQL Exception while executing the following:INSERT INTO public.OS_CURRENTSTEP_PREV (ID, PREVIOUS_ID) VALUES (?, ?) (ERROR: unexpected data beyond EOF in block 876 of relation base/16385/17092
  Hint: This has been seen to occur with buggy kernels; consider updating your system.)
	at org.ofbiz.core.entity.jdbc.SQLProcessor.executeUpdate(SQLProcessor.java:683)
	at org.ofbiz.core.entity.GenericDAO.singleInsert(GenericDAO.java:205)
	... 12 more
Caused by: org.postgresql.util.PSQLException: ERROR: unexpected data beyond EOF in block 876 of relation base/16385/17092
	at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2077)
	at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1810)
	at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:498)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:386)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:332)
	at org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:97)
	at org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:97)
	at org.ofbiz.core.entity.jdbc.SQLProcessor.executeUpdate(SQLProcessor.java:673)
	... 13 more