db-derby-dev mailing list archives: June 2009

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Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-2118) Change some boundary checks in ArrayInputStream to ASSERTs to improve performance Mon, 29 Jun, 14:23
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-2114) Let Clock embed a HashMap rather than inherit from Hashtable Mon, 29 Jun, 14:23
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-2107) Move page latching out of the lock manager Mon, 29 Jun, 14:23
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-2099) Make BasePage.getPageId() final Mon, 29 Jun, 14:25
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-2050) Manipulating CachedItems could be more efficient Mon, 29 Jun, 14:25
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-2051) CachedItem's comments and code are inconsistent wrt. syncronization Mon, 29 Jun, 14:25
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-2046) Make class org.apache.derby.iapi.store.raw.PageKey final Mon, 29 Jun, 14:25
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-2086) Build a resource pooling subsystem to facilitate object reuse and concurrency Mon, 29 Jun, 14:25
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-2020) Change file option for syncing log file to disk from rws to rwd Mon, 29 Jun, 14:27
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1994) Implement data model for order entry Mon, 29 Jun, 14:27
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1961) Investigate resource usage for different types of load on an in-memory database Mon, 29 Jun, 14:27
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1987) Add Order Entry application/system/performance test/toolkit Mon, 29 Jun, 14:27
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1907) Improve optimizer to prune query plans more aggressively. Mon, 29 Jun, 14:29
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1957) Factor out run-time statistics information from language ResultSet classes Mon, 29 Jun, 14:29
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1908) Investigate: What's the "unit" for optimizer cost estimates? Mon, 29 Jun, 14:29
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1876) Investigate overhead of JDBC layer and compiled activation code for simple embedded read-only, forward ResultSets Mon, 29 Jun, 14:31
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1713) Memory do not return to the system after Shuting down derby 10.2.1.0, following an out of memory event Mon, 29 Jun, 14:31
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1906) Investigate appropriateness of current optimizer timeout mechanism. Mon, 29 Jun, 14:31
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1879) Save meta data related information for an EmbedResultSet at the plan level instead of the ResultSet level improves performance. Mon, 29 Jun, 14:31
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1862) Simple hash improves performance Mon, 29 Jun, 14:31
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1905) Optimizer cost estimates for subqueries are way (way) too high. Mon, 29 Jun, 14:31
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1442) Do performance analysis and come up with a good query block size value for the client to send to the server Mon, 29 Jun, 14:33
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1365) Address potential problems with optimizer logic in some rarely-exercised code. Mon, 29 Jun, 14:33
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1372) Handle data overrun of DDMWriter buffer more efficiently Mon, 29 Jun, 14:33
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1704) Allow more concurrency in the lock manager Mon, 29 Jun, 14:33
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1677) Investigate increasing the memory limit that is used to calculate the sortbuffer size for sorting. Mon, 29 Jun, 14:33
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1257) Enhance Derby optimizer and execution model to support effective use of multiple indexes on one table. Derby currently can use one index on a table and there are many situations where using multiple indexes on a table could improve performance significant Mon, 29 Jun, 14:35
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1259) Optimizer plan consideration doesn't account for infinite cost estimates and can therefore choose plans requiring excessive memory. Mon, 29 Jun, 14:35
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1357) Short-circuit logic in optimizer appears to be incorrect... Mon, 29 Jun, 14:35
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1224) Remove unused variables in DatabaseMetaData Mon, 29 Jun, 14:35
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1260) Investigate impact of infinite cost estimates on arithmetic operations/comparisons in the optimizer. Mon, 29 Jun, 14:35
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-959) Allow use of DRDA QRYDTA block sizes greater than 32K Mon, 29 Jun, 14:37
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1205) Unexpectedly very slow performance compared to DB2 Mon, 29 Jun, 14:37
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1073) Reset optimizer timeout for subqueries on a per-round basis to allow consideration of plans that use pushed predicates. Mon, 29 Jun, 14:37
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-872) Fix how to measure performance of lob streaming Mon, 29 Jun, 14:37
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-938) ContextManager needs to be optimized Mon, 29 Jun, 14:37
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-1007) Optimizer can return incorrect "best cost" estimates with nested subqueries, which leads to generation of sub-optimal plans. Mon, 29 Jun, 14:37
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-827) Performance can be improved by re-using language ResultSets across Activation executions. Mon, 29 Jun, 14:39
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-825) writeSQLCAGRP() should use byte[] constants instead of Strings where feasible Mon, 29 Jun, 14:39
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-867) Performance issues with large object handling in DDMWriter Mon, 29 Jun, 14:39
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-821) Client driver: Implicitly close exhausted result sets on the server Mon, 29 Jun, 14:39
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-822) Client driver: Pre-fetch data on executeQuery() Mon, 29 Jun, 14:39
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-815) Prevent unneeded object creation and excessive decoding in parseSQLDTA_work() Mon, 29 Jun, 14:41
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-818) Read-only embedded ResultSets incur performance penalty due to updateable ResultSet code. Mon, 29 Jun, 14:41
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-816) In DDMWriter and DDMReader, use system routines in java.util.Arrays and System.arrayCopy Mon, 29 Jun, 14:41
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-814) Prevent unneeded object creation and excessive decoding in parsePKGNAMCSN() Mon, 29 Jun, 14:41
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-806) One each deleted or updated from a heap row a new RowPosition object is created. Mon, 29 Jun, 14:41
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-801) Allow parallel access to data files. Mon, 29 Jun, 14:41
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-733) Starvation in RAFContainer.readPage() Mon, 29 Jun, 14:43
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-774) DRDAConnThread::doneData should use statically allocated SQLException objects Mon, 29 Jun, 14:43
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-731) org.apache.derby.impl.sql.compile.StringSlice is an inefficient way to do substring Mon, 29 Jun, 14:43
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-799) Large response times during checkpointing on disk-bound systems Mon, 29 Jun, 14:43
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-760) Implement routines that will write/read data from a byte[] in drda format rather than calling getXXX and setXXX methods Mon, 29 Jun, 14:43
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-754) Push ON clause predicates down when optimizing SELECT queries. Mon, 29 Jun, 14:43
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-352) Clobs on insert using streams should not instantiate into memory Mon, 29 Jun, 14:45
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-704) Large page cache kills initial performance Mon, 29 Jun, 14:45
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-684) Improve performance of Clob objects (ClobOutputStream#write,ClobWriter#write) on the client Mon, 29 Jun, 14:45
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-326) Improve streaming of large objects for network server and client Mon, 29 Jun, 14:45
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-642) SELECT MAX doesn't use indices optimally Mon, 29 Jun, 14:45
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-212) Optimize some specific methods in Network Server to improve performance Mon, 29 Jun, 14:47
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-110) hsqldb is faster than derby doing inserts Mon, 29 Jun, 14:47
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-262) Use Java 1.5 NIO for improved performance Mon, 29 Jun, 14:47
Knut Anders Hatlen (JIRA) [jira] Updated: (DERBY-4018) ArrayIndexOutOfBoundsException in TopService.inService under heavy multithreaded use of EmbeddedDriver Mon, 29 Jun, 15:14
Knut Anders Hatlen (JIRA) [jira] Updated: (DERBY-4018) ArrayIndexOutOfBoundsException in TopService.inService under heavy multithreaded use of EmbeddedDriver Mon, 29 Jun, 15:14
j...@apache.org [jira] Subscription: Derby: JIRA issues with patch available Mon, 29 Jun, 15:36
Kathey Marsden (JIRA) [jira] Commented: (DERBY-4267) Investigate why Derby 10.5.1.1 is not available in the maven2 repositories Mon, 29 Jun, 15:48
Ole.Solb...@Sun.COM Regression Test Report - Daily 789116 - Sun DBTG Mon, 29 Jun, 15:55
Rick Hillegas (JIRA) [jira] Commented: (DERBY-4252) intermittent corruption./java.io.EOFException in RandomAccessFile.readInt() on boot after compress with background checkpoint Mon, 29 Jun, 16:46
Kathey Marsden (JIRA) [jira] Commented: (DERBY-4252) intermittent corruption./java.io.EOFException in RandomAccessFile.readInt() on boot after compress with background checkpoint Mon, 29 Jun, 17:00
Kim Haase (JIRA) [jira] Closed: (DERBY-2821) emphasize that derby encryption only supports NoPadding option Mon, 29 Jun, 17:20
Kim Haase (JIRA) [jira] Closed: (DERBY-4229) encryptionKeyLength connection attribute should be documented Mon, 29 Jun, 17:20
Kim Haase (JIRA) [jira] Closed: (DERBY-3468) Example in documentation of ij.exceptionTrace is wrong Mon, 29 Jun, 17:22
Kim Haase (JIRA) [jira] Closed: (DERBY-3737) Document the new SignatureChecker lint tool in the Tools Guide Mon, 29 Jun, 17:26
Kathey Marsden (JIRA) [jira] Commented: (DERBY-3834) Convert derbynet/runtimeinfo to JUnit Mon, 29 Jun, 17:28
Sebb (JIRA) [jira] Updated: (DERBY-4293) Mutable public static variables Mon, 29 Jun, 17:32
Kim Haase (JIRA) [jira] Closed: (DERBY-3787) Document the new system stored procedure SYSCS_UTIL.SYSCS_UPDATE_STATISTICS which was added as part of DERBY-269 Mon, 29 Jun, 17:34
Sebb (JIRA) [jira] Commented: (DERBY-4293) Mutable public static variables Mon, 29 Jun, 17:34
Tiago R. Espinha (JIRA) [jira] Commented: (DERBY-3834) Convert derbynet/runtimeinfo to JUnit Mon, 29 Jun, 17:42
Eranda Sooriyabandara (JIRA) [jira] Commented: (DERBY-4244) ALTER TABLE Sanity ASSERT in add column with autocommit off Mon, 29 Jun, 17:56
Tiago Espinha Derby setup screencast Mon, 29 Jun, 19:06
Lily Wei (JIRA) [jira] Created: (DERBY-4294) java.lang.OutOfMemoryError from mailjdbc test after running for one hour from select * from REFRESH.INBOX Mon, 29 Jun, 20:38
Lily Wei (JIRA) [jira] Updated: (DERBY-4294) java.lang.OutOfMemoryError from mailjdbc test after running for one hour from select * from REFRESH.INBOX Mon, 29 Jun, 20:40
Tiago R. Espinha (JIRA) [jira] Commented: (DERBY-3834) Convert derbynet/runtimeinfo to JUnit Mon, 29 Jun, 20:44
Kathey Marsden (JIRA) [jira] Commented: (DERBY-3834) Convert derbynet/runtimeinfo to JUnit Mon, 29 Jun, 20:58
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4269) Failover did not succeed in 2 min.: testReplication_Local_3_p6_autocommit_OK Mon, 29 Jun, 23:09
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4250) testReplication_Local_3_p2_StateTests_bigInsert_sleepBeforeStopMaster(...ReplicationRun_Local_3_p2), Got SQLSTATE: XRE07, Expected null. Mon, 29 Jun, 23:11
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4239) corruption with storerecovery oc_rec? tests. ERROR XSLA7: Cannot redo operation null in the log when compress occurs during checkpoint, then jvm exits Mon, 29 Jun, 23:17
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4231) testReplication_Local_StateTest_part1: Unexpected SQL state. expected:<XRE[20]> but was:<XRE[07]> Mon, 29 Jun, 23:19
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4202) derbynet/runtimeinfo.java failed with Invalid reply from network server: Insufficient data Mon, 29 Jun, 23:19
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4142) java.lang.VerifyError causing java.sql.SQLException: Cannot create an instance of generated class ... in lang.GeneratedColumnsTest and GeneratedColumnsPermsTest on IBM iseries Mon, 29 Jun, 23:21
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4097) 'testMixedInsertDelete(org.apache.derbyTesting.functionTests.tests.lang.NullableUniqueConstraintTest)org.apache.derby.client.am.BatchUpdateException' Mon, 29 Jun, 23:21
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4159) encryptionAll/encryptionAES/access.sql fails with different query plan on zos. Results are ok. Mon, 29 Jun, 23:21
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4038) On Z/OS store/access.sql fails with encryptionAES and encryptionDES Mon, 29 Jun, 23:23
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4053) suites.All hang with message java.net.BindException: Address already in use: NET_Bind in derby.log Mon, 29 Jun, 23:23
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4037) On Z/OS storetests/st_reclaim_longcol.java fails with a large number of pages Mon, 29 Jun, 23:25
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-4007) Optimization of IN with nested SELECT Mon, 29 Jun, 23:33
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-3974) allow more concurrent activity while compressing a table Mon, 29 Jun, 23:33
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-3937) Select count(*) scans all the rows (and is therefore slow with big tables), is the amount of rows not available/known for example in index ? Mon, 29 Jun, 23:35
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-3790) Investigate if request for update statistics can be skipped for certain kind of indexes, one instance may be unique indexes based on one column. Mon, 29 Jun, 23:35
Dag H. Wanvik (JIRA) [jira] Updated: (DERBY-3714) Significant performance degradation if Hibernate creates different order of attributes Mon, 29 Jun, 23:37
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