8d71d283b9
HBASE-13646 HRegion#execService should not try to build incomplete messages
...
Signed-off-by: Sean Busbey <busbey@apache.org>
2015-07-06 10:36:13 -05:00
ab9a0b80af
HBASE-13925 Use zookeeper multi to clear znodes in ZKProcedureUtil
...
Signed-off-by: Andrew Purtell <apurtell@apache.org>
Conflicts:
hbase-client/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKUtil.java
2015-07-03 12:29:55 -07:00
09846ff81a
HBASE-13895 DATALOSS: Region assigned before WAL replay when abort (Enis Soztutar) -- ADDENDUM
2015-07-02 10:05:58 -07:00
0f17b76796
HBASE-13895 DATALOSS: Region assigned before WAL replay when abort (Enis Soztutar)
2015-07-01 17:30:16 -07:00
93b0b41603
HBASE-13983 Doc how the oddball HTable methods getStartKey, getEndKey, etc. will be removed in 2.0.0
2015-07-01 13:05:25 -07:00
7ece46a607
HBASE-13995 ServerName is not fully case insensitive
2015-07-01 09:40:11 -07:00
a58848507a
HBASE-13990 make maven site generation work with jdk8
...
* includes additiona branch-1 specific fixes to javadocs
* includes rollback of 2 changes from HBASE-13898 that didn't apply to branch-1
Conflicts:
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java
2015-07-01 08:00:15 -05:00
8e6fb569c5
HBASE-13963 Do not leak jdk.tools dependency from hbase-annotations
...
Signed-off-by: Sean Busbey <busbey@apache.org>
Conflicts:
hbase-common/pom.xml
2015-06-26 08:56:14 -05:00
5a24d16f4c
HBASE-13938 Deletes done during the region merge transaction may get eclipsed (ddas, enis, ndimiduk)
2015-06-23 11:08:48 -07:00
7d778e892c
HBASE-13906 Improve handling of NeedUnmanagedConnectionException
2015-06-22 23:36:04 -07:00
9ac6539f6a
HBASE-13898 correct additional javadoc failures under java 8 <Gabor Liptak>
...
Ammending-Author: Sean Busbey <busbey@apache.org>
Conflicts:
hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/ProtobufUtil.java
hbase-common/src/main/java/org/apache/hadoop/hbase/CellComparator.java
hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/ProtobufMagic.java
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
hbase-server/src/main/java/org/apache/hadoop/hbase/http/jmx/JMXJsonServlet.java
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.java
hbase-server/src/main/java/org/apache/hadoop/hbase/util/BloomFilterChunk.java
hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALSplitter.java
2015-06-23 01:14:15 -05:00
84675ef615
HBASE-13103 [ergonomics] add region size balancing as a feature of master
2015-06-22 22:48:19 -07:00
f2f19ddb5c
HBASE-13909 update branch-1 poms to 1.3.0-SNAPSHOT
2015-06-15 22:30:56 -05:00
e949f0c6b0
HBASE-13901 Error while calling watcher on creating and deleting an HBase table
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Signed-off-by: Andrew Purtell <apurtell@apache.org>
2015-06-15 11:28:16 -07:00
0a0ff3354a
HBASE-13569 Correct Javadoc (for Java8)
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Signed-off-by: Sean Busbey <busbey@apache.org>
Conflicts:
hbase-client/src/main/java/org/apache/hadoop/hbase/HColumnDescriptor.java
hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java
hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java
hbase-client/src/main/java/org/apache/hadoop/hbase/client/Result.java
hbase-client/src/main/java/org/apache/hadoop/hbase/client/Scan.java
hbase-client/src/main/java/org/apache/hadoop/hbase/filter/FilterBase.java
hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/ProtobufUtil.java
hbase-common/src/main/java/org/apache/hadoop/hbase/KeyValue.java
hbase-server/src/main/java/org/apache/hadoop/hbase/constraint/ConstraintException.java
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderV2.java
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileScanner.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MiniBatchOperationInProgress.java
hbase-server/src/main/java/org/apache/hadoop/hbase/util/BloomFilterWriter.java
2015-06-13 22:23:53 -05:00
4468f3ce95
HBASE-13829 Add more ThrottleType (Guanghao Zhang)
2015-06-13 06:30:26 -07:00
e78572a985
HBASE-13892 NPE in ClientScanner on null results array
...
Signed-off-by: Andrew Purtell <apurtell@apache.org>
2015-06-11 19:27:06 -07:00
254de0c451
HBASE-13875 Clock skew between master and region server may render restored region without server address
2015-06-09 18:26:56 -07:00
d34e9c5c5c
HBASE-13686 - Fail to limit rate in RateLimiter (Ashish Singhi)
2015-06-07 22:25:32 +05:30
deca3930b9
HBASE-13851 RpcClientImpl.close() can hang with cancelled replica RPCs
2015-06-06 14:02:00 -07:00
93148719ba
HBASE-13638 Put copy constructor is shallow
...
Deep copy the cell list
Signed-off-by: Elliott Clark <eclark@apache.org>
2015-06-01 13:57:19 -07:00
adbc3dd097
HBASE-13779 Calling table.exists() before table.get() end up with an empty Result (addendum)
2015-05-29 17:42:11 -07:00
32f4a6ad8f
HBASE-13799 javadoc how Scan gets polluted when used; if you set attributes or ask for scan metrics
2015-05-29 11:32:17 -07:00
5b67c7a0da
HBASE-13779 Calling table.exists() before table.get() end up with an empty Result
2015-05-29 16:44:39 +01:00
ffcd4d424f
HBASE 13796 - Fixed ZKUtil's cleaning of the zookeeper quorum setting
...
Signed-off-by: stack <stack@apache.org>
2015-05-28 20:07:46 -07:00
94f0ee7ee3
HBASE-13616 Move ServerShutdownHandler to Pv2
2015-05-28 15:04:27 -07:00
2f9851af26
HBASE-13761 Optimize FuzzyRowFilter (Vladimir Rodionov)
2015-05-28 10:17:46 -07:00
a035baab46
HBASE-13768 ZooKeeper znodes are bootstrapped with insecure ACLs in a secure configuration (Enis Soztutar)
2015-05-27 12:32:45 -07:00
cb7675c57f
HBASE-13767 Allow ZKAclReset to set and not just clear ZK ACLs
2015-05-27 18:34:17 +01:00
a9e2f4cf31
HBASE-5980 Scanner responses from RS should include metrics on rows/KVs filtered; ADDENDUM -- ADD MISSING FILES
2015-05-21 11:11:06 -07:00
078a9a97c3
HBASE-5980 Scanner responses from RS should include metrics on rows/KVs filtered
2015-05-21 11:09:14 -07:00
420baa42ce
HBASE-13709 Updates to meta table server columns may be eclipsed
...
Conflicts:
hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/handler/OpenMetaHandler.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/handler/OpenRegionHandler.java
hbase-server/src/test/java/org/apache/hadoop/hbase/TestMetaTableAccessor.java
hbase-server/src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionServerNoMaster.java
2015-05-20 19:19:52 -07:00
49fc6c817d
HBASE-13711 Provide an API to set min and max versions in HColumnDescriptor (Stephen Yuan Jiang)
2015-05-20 11:41:23 -07:00
181ec60510
HBASE-13704 Hbase throws OutOfOrderScannerNextException when MultiRowRangeFilter is used (Aleksandr Maksymenko)
2015-05-19 20:21:08 -07:00
00636cc998
HBASE-13677 changed RecoverableZooKeeper logs about retries from info and warn to debug
...
Signed-off-by: Sean Busbey <busbey@cloudera.com>
2015-05-18 10:31:40 -05:00
77b155858f
HBASE-13661 Correct binary compatibility issues discovered in 1.1.0RC0
2015-05-11 18:33:44 -07:00
6213fa2fce
HBASE-13611 update clover profile to work with clover 4.x and maven 3.
...
* change pom to use a maven 3 compat version of clover
* add clover to javadoc plugin deps so that instrumented doclet works
* modify IA annotation test to filter out clover instrumentation
* make splitlog counters check for atomiclong before casting
2015-05-11 01:23:35 -05:00
ec3d7189ad
HBASE-13625 Use HDFS for HFileOutputFormat2 partitioner's path (Stephen Yuan Jiang)
2015-05-06 07:29:57 -07:00
0e76cf5be4
HBASE-13333 Renew Scanner Lease without advancing the RegionScanner.
2015-05-02 17:52:27 -07:00
60b356a853
HBASE-13312 SmallScannerCallable does not increment scan metrics
2015-05-01 16:33:11 -07:00
d16c8ab71b
HBASE-13325 Protocol Buffers 2.5 no longer available for download on code.google.com
2015-05-01 13:31:40 -07:00
5a87c3910e
HBASE-13358 - Update VisibilityClient to accept Connection objects.
...
Signed-off-by: Srikanth Srungarapu <ssrungarapu@cloudera.com>
2015-04-30 21:21:41 -07:00
20b6c31880
HBASE-13594 MultiRowRangeFilter shouldn't call HBaseZeroCopyByteString.wrap() directly
2015-04-29 10:35:45 -07:00
cc5a0f361a
HBASE-13417 batchCoprocessorService() does not handle NULL keys (Abhishek Singh Chouhan)
2015-04-28 16:39:56 -07:00
0dbbc8b8de
HBASE-11677 Making Logger instance modifiers consistent.
...
* IA.Public accessible logger instances deprecated
* logger instances modified by tests left in place
* all others made private static final
Signed-off-by: Sean Busbey <busbey@apache.org>
Conflicts:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientIdGenerator.java
hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionImplementation.java
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RpcRetryingCallerImpl.java
hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestAsyncProcess.java
hbase-it/src/test/java/org/apache/hadoop/hbase/IntegrationTestIngestWithEncryption.java
hbase-rest/src/test/java/org/apache/hadoop/hbase/rest/TestStatusResource.java
hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterRpcServices.java
hbase-server/src/test/java/org/apache/hadoop/hbase/TestTableDescriptor.java
hbase-server/src/test/java/org/apache/hadoop/hbase/mapreduce/TestRowCounter.java
hbase-server/src/test/java/org/apache/hadoop/hbase/util/hbck/TestOfflineMetaRebuildHole.java
hbase-server/src/test/java/org/apache/hadoop/hbase/util/hbck/TestOfflineMetaRebuildOverlap.java
2015-04-28 10:10:21 -05:00
c678a28fca
HBASE-13518 Typo in hbase.hconnection.meta.lookup.threads.core parameter (Devaraj Das)
2015-04-27 23:06:51 -07:00
566dfda5b7
HBASE-13466 Document deprecations in 1.x - Part 1 (Lars Francke)
2015-04-26 13:11:35 -07:00
1a0c61c974
HBASE-13546 handle nulls in MasterAddressTracker when there is no master active.
2015-04-24 13:54:36 -05:00
c8d8499da8
HBASE-13527 The default value for hbase.client.scanner.max.result.size is never actually set on Scans
...
Signed-off-by: stack <stack@apache.org>
2015-04-22 13:29:48 -07:00
385b5fa1f6
HBASE-13502 - Deprecate/remove getRowComparator() in TableName (Ram)
2015-04-22 09:34:10 +05:30
ca7efc183a
HBASE-13499 AsyncRpcClient test cases failure in powerpc
2015-04-14 23:00:17 +08:00
60c30c707c
HBASE-13491 Issue in FuzzyRowFilter#getNextForFuzzyRule (Anoop Sam John)
2015-04-17 21:56:04 -07:00
a4f77d49a5
HBASE-13090 Progress heartbeats for long running scanners
...
Signed-off-by: stack <stack@apache.org>
2015-04-17 15:43:13 -07:00
cf45c8d30a
Bump pom version to 1.2.0-SNAPSHOT
2015-04-16 17:30:48 -07:00
fe8658ce35
HBASE-13460. Revise the MetaLookupPool executor-related defaults (introduced in HBASE-13036).
2015-04-15 07:56:58 -07:00
7c5ae63850
HBASE-13290 Procedure v2 - client enable/disable table sync (Stephen Yuan Jiang)
2015-04-15 11:05:49 +01:00
67149d253b
HBASE-13204 Procedure v2 - client create/delete table sync
2015-04-15 11:02:26 +01:00
58b1598b44
HBASE-13203 Procedure v2 - master create/delete table
2015-04-15 11:01:36 +01:00
4fc39fd7c9
HBASE-13457 SnapshotExistsException doesn't honor the DoNotRetry
2015-04-13 23:22:28 +01:00
c73f1a5183
HBASE-13270 Setter for Result#getStats is #addResults; confusing!
...
Signed-off-by: stack <stack@apache.org>
2015-04-09 10:44:58 -07:00
408b916175
HBASE-13421 Reduce the number of object creations introduced by HBASE-11544 in scan RPC hot code paths
...
Signed-off-by: stack <stack@apache.org>
2015-04-08 14:03:38 -07:00
c031d8de23
HBASE-13205 [branch-1] Backport HBASE-11598 Add simple rpc throttling (Ashish Singhi)
2015-04-07 18:29:03 -07:00
15cdd898e3
HBASE-13299 Add setReturnResults() to Increment, like Append has
...
Signed-off-by: stack <stack@apache.org>
2015-04-07 11:47:48 -07:00
2982768153
Amend HBASE-13409 Add categories to uncategorized tests; fix compliation error
2015-04-06 12:03:42 -07:00
935352c4d8
HBASE-13409 Add categories to uncategorized tests
2015-04-06 11:08:10 -07:00
30f6d54cc8
HBASE-13374 Small scanners (with particular configurations) do not return all rows
...
Signed-off-by: Enis Soztutar <enis@apache.org>
2015-04-05 14:29:43 -07:00
7e1e5a60fb
HBASE-13216 Add version info in RPC connection header (Liu Shaohui)
2015-04-02 15:50:49 -07:00
79d80b187e
HBASE-13335 Use serverHasMoreResults context in SmallScanner and SmallReversedScanner.
...
Use the context passed back via ScanResponse that a RegionServer
fills in to denote whether or not more results existing in the
current Region. Add a simple factory to remove a static method
used across both SmallScanner and SmallReverseScanner. Add new
unit tests for both scanner classes to test scans with and
without the new context (as a quick backward-compatibility test).
2015-03-31 21:35:34 -07:00
b0116398ff
HBASE-13262 Observe ScanResponse.moreResults in ClientScanner.
...
The RS already returns to the client whether or not it has additional
results to be returned in a subsequent call to scan(), but the ClientScanner
did not use or adhere to this value. Subsequently, this can lead to
bugs around moving to the next region too early. A new method was added
to ClientScanner in the name of testability.
Encapsulate server-state into RegionServerCallable to avoid
modifying parameterization of callable impls.
Signed-off-by: Andrew Purtell <apurtell@apache.org>
2015-03-28 18:56:50 -07:00
b9a615e739
HBASE-13222 Add isBalancerEnabled method to Master and Admin.
...
Include some basic tests for the method on a testing cluster.
Also update master page to show an alert when balancer is disabled.
Signed-off-by: Enis Soztutar <enis@apache.org>
Conflicts:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionImplementation.java
hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/RequestConverter.java
hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/MasterProtos.java
2015-03-27 14:47:24 -07:00
2fd6f2a829
HBASE-13316 Reduce the downtime on planned moves of regions
...
Summary:
The current behavior of a region move shuts down a region and then starts is up in another regionserver. This causes increased latency and possibly timeouts till the new region's cache is fully warmed up. We can make a region move less disruptive by warming the cache in the destination region server before shutting dow the old region.
See https://issues.apache.org/jira/browse/HBASE-13316
Test Plan:
1. Unit Tests
2. Added test for concurrent moves and warmups
3. Manually tested reads/writes happening with concurrent moves
Subscribers: tedyu
Differential Revision: https://reviews.facebook.net/D35967
Signed-off-by: Elliott Clark <eclark@apache.org>
2015-03-27 11:56:21 -07:00
46e782927d
HBASE-13298 Clarify if Table.{set|get}WriteBufferSize() is deprecated or not
2015-03-25 13:10:29 -07:00
01fdafb5ee
HBASE-13305 Get(Get get) is not copying the row key
...
Signed-off-by: stack <stack@apache.org>
2015-03-25 07:39:45 -07:00
ac6fd86d26
HBASE-13273 Make Result.EMPTY_RESULT read-only; currently it can be modified
...
Signed-off-by: Sean Busbey <busbey@apache.org>
Conflicts:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/Result.java
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestResult.java
2015-03-24 13:15:43 -07:00
266e883daa
HBASE-13314 Fix NPE in HMaster.getClusterStatus()
2015-03-24 09:28:51 +00:00
7fad7d1a5b
HBASE-13315 BufferedMutator should be @InterfaceAudience.Public (addendum)
2015-03-23 16:35:46 -07:00
ebd407dbda
HBASE-13315 BufferedMutator should be @InterfaceAudience.Public (Solomon Duskis)
2015-03-23 12:17:28 -07:00
b83e3ac770
HBASE-13274 Fix misplaced deprecation in Delete#addXYZ (Mikhail Antonov)
2015-03-20 09:44:38 -07:00
d0af30ea3c
HBASE-13093 Local mode HBase instance doesn't shut down.
2015-03-17 14:47:11 +00:00
71f22ebfb8
HBASE-13193 RegionScannerImpl filters should not be reset if a partial Result is returned (Jonathan Lawlor)
2015-03-16 13:27:02 -07:00
c3b47f2251
HBASE-13236 Add addt'l lifecycle-mapping executions.
...
Adds a number of lifecycle-mapping entries which
prevent errors from showing up in Eclipse on a fresh
import of HBase. For plugins defined in the top-level
pom, the mapping is added there; otherwise, the mapping
is pushed down to the child pom.
Signed-off-by: Sean Busbey <busbey@apache.org>
2015-03-14 00:19:44 -05:00
7fdadddfcc
HBASE-13232 ConnectionManger : Batch pool threads and metaLookup pool threads should use different name pattern.
2015-03-13 22:55:15 +05:30
2d2b9ba283
HBASE-13162 Addendum adds InterfaceAudience annotation to ZkAclReset
2015-03-12 19:09:25 -07:00
d899322286
HBASE-13162 Add capability for cleaning hbase acls to hbase cleanup script (Srikanth Srungarapu)
2015-03-12 17:07:25 -07:00
da9c5ac18c
HBASE-13171 Change AccessControlClient methods to accept connection object to reduce setup time (Srikanth Srungarapu)
2015-03-11 21:41:24 -07:00
0f892c23ec
HBASE-13063 Allow to turn off memstore replication for region replicas - ADDENDUM for turning of primary flush tigger when this is enabled
2015-03-11 14:57:15 -07:00
0fb1ad7db4
HBASE-13142 [PERF] Reuse the IPCUtil#buildCellBlock buffer; ADDENDUM
2015-03-10 22:21:01 -07:00
eb2193afa0
HBASE-13063 Allow to turn off memstore replication for region replicas
2015-03-10 10:17:15 +00:00
5ff108d0e1
HBASE-12405 WAL accounting by Store
...
Conflicts:
hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/ResponseConverter.java
hbase-client/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKUtil.java
hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/ZooKeeperProtos.java
hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALSplitter.java
2015-03-10 13:13:40 +08:00
280120ee15
HBASE-13121 Async wal replication for region replicas and dist log replay does not work together
...
Conflicts:
hbase-server/src/main/java/org/apache/hadoop/hbase/coordination/ZkSplitLogWorkerCoordination.java
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/RegionReplicaReplicationEndpoint.java
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestRegionReplicaReplicationEndpointNoMaster.java
2015-03-09 16:12:04 -07:00
5619f20e1a
HBASE-12706 Support multiple port numbers in ZK quorum string (Stephen Yuan Jiang)
2015-03-06 16:47:44 -08:00
3e3276d7fa
HBASE-13142 [PERF] Reuse the IPCUtil#buildCellBlock buffer
2015-03-06 14:35:49 -08:00
bd4c6694f2
HBASE-13122 Improve efficiency for return codes of some filters (Shuaifeng)
2015-03-05 18:41:52 -08:00
0c64a57e52
HBASE-11544: [Ergonomics] hbase.client.scanner.caching is dogged and will try to return batch even if it means OOME
...
Signed-off-by: stack <stack@apache.org>
2015-03-04 18:04:15 -08:00
f5020e9c1a
HBASE-13109 Make better SEEK vs SKIP decisions during scanning.
2015-03-04 14:13:41 -08:00
6b1674b31c
HBASE-13017 Backport HBASE-12035 Keep table state in Meta to 1.0 branch; REVERT
2015-03-03 13:26:15 -08:00
9e7ad99593
HBASE-11580 Failover handling for secondary region replicas
...
Conflicts:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionAdminServiceCallable.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/RegionReplicaReplicationEndpoint.java
2015-03-03 13:21:01 -08:00
ad6e1877d5
HBASE-13122 Revert pending answer to Ram's question
2015-03-02 20:59:50 -08:00
d4200ab39e
HBASE-12995 Document that HConnection#getTable methods do not check table existence since 0.98.1
2015-03-02 16:58:54 -08:00
e64bd72dcf
HBASE-13122 Improve efficiency for return codes of some filters (Shuaifeng Zhou)
2015-03-02 07:47:56 -08:00
Andrey Stepachev
Ashish Singhi
stack
Matteo Bertozzi
Sean Busbey
Gábor Lipták
Nick Dimiduk
Mikhail Antonov
Misty Stanley-Jones
tedyu
Josh Elser
ramkrishna
Enis Soztutar
Changgeng Li
Geoffrey
Andrew Purtell
ted malaska
Lars Hofhansl
Elliott Clark
Matt Warhaftig
Usha Kuchibhotla
Jonathan Lawlor
zhangduo
Devaraj Das
Mikhail Antonov
Sameet Agarwal
anoopsjohn
Jonathan M Hsieh