I’ve captured the execution plan by running a standalone tool. [hpSDID@11 deviceId="-" reqId="-" threadId="1"] executing SQL select /*+ USE_SORT_MERGE_JOIN */T1.L,T1.C,T1.A,T1.R,T1.W,T1.P,T1.N,T1.E,T1.S,T1.M, T1.CW, T1 .T,T1.Y,T1.U FROM "asset_metadata" T1 WHERE R=(SELECT MAX(R) from "asset_metadata" WHERE L=T1.L AND C=T1.C AND A=T1.A AND C=? AND L IN (?)) AND T1.L in (?) AND T1.T=? AND T1.N ILIKE ? order by T1.N asc nulls first limit 300 [hpSDID@11 deviceId="-" reqId="-" threadId="1"] Execution plan for sql=explain select /*+ USE_SORT_MERGE_JOIN */T1.L,T1.C,T1.A,T1.R,T1.W,T1.P,T1.N,T1.E,T1. S,T1.M, T1.CW, T1.T,T1.Y,T1.U FROM "asset_metadata" T1 WHERE R=(SELECT MAX(R) from "asset_metadata" WHERE L=T1.L AND C=T1.C AND A=T1.A AND C=? AND L IN (?)) AND T1.L in (?) AND T1.T=? AND T1.N ILIKE ? order by T1.N asc nulls first limit 300, plan=CLIENT 1-CHUNK PARALLEL 1-WAY RANGE SCAN OVER asset_metadata [[13 5,175,226,230,143,212,79,165,161,24,97,85,113,180,224,47]]| SERVER FILTER BY (s.T = 1 AND s.N LIKE '%sai2016%')| SERVER TOP 300 ROWS SORTED BY [T1.N]| CLIENT MERGE SORT| PARALLEL INNER-JOIN TABLE 0| CLIENT 1-CHUNK PARALLEL 1-WAY RANGE SCAN OVER asset_metadata [[135,175,226,230,143,212,79,165,161, 24,97,85,113,180,224,47],251381657381109760]| SERVER AGGREGATE INTO ORDERED DISTINCT ROWS BY [L, C, A]| CLIENT MERGE SORT| DYNAMIC SERV ER FILTER BY (L, C, A) IN (($1.$2, $1.$3, $1.$4))| AFTER-JOIN SERVER FILTER BY T1.R = $1.$5|
Jerry P. Chabot | Master Software Designer 7 | Big Data Solutions, Hewlett Packard Enterprise | 508.467.1236 | [email protected]<mailto:[email protected]> From: Chabot, Jerry Sent: Monday, August 15, 2016 8:59 AM To: [email protected] Subject: RE: How to troubleshoot 'Could not find hash cache for joinId' which is failing always for some users and never for others I’ve added the hint to the SELECT. Does anyone see anything wrong with this statement? select /*+ USE_SORT_MERGE_JOIN */T1.L,T1.C,T1.A,T1.R,T1.W,T1.P,T1.N,T1.E,T1.S,T1.M, T1.CW, T1.T,T1.Y,T1.U FROM "asset_metadata" T1 WHERE R=(SELECT MAX(R) from "asset_metadata" WHERE L=T1.L AND C=T1.C AND A=T1.A AND C=? AND L IN (?)) AND T1.L in (?) AND T1.N ILIKE ? order by T1.N asc nulls first limit 100 I ask because the query still fails. The stack trace in the region server is the same as before. It appears to still be using a hash-join. Caused by: org.apache.phoenix.exception.PhoenixIOException: org.apache.phoenix.exception.PhoenixIOException: org.apache.hadoop.hbase.DoNotRetryIOException: Could not find hash cache for joinId: \^V???0^M^G. The cache might have expired and have been removed. at org.apache.phoenix.coprocessor.HashJoinRegionScanner.<init>(HashJoinRegionScanner.java:96) at org.apache.phoenix.coprocessor.ScanRegionObserver.doPostScannerOpen(ScanRegionObserver.java:195) at org.apache.phoenix.coprocessor.BaseScannerRegionObserver.postScannerOpen(BaseScannerRegionObserver.java:144) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postScannerOpen(RegionCoprocessorHost.java:1976) How can I confirm SORT_MERGE is being used? Jerry P. Chabot | Master Software Designer 7 | Big Data Solutions, Hewlett Packard Enterprise | 508.467.1236 | [email protected]<mailto:[email protected]> From: Kathiresan S [mailto:[email protected]] Sent: Thursday, May 05, 2016 11:14 AM To: [email protected]<mailto:[email protected]> Subject: Re: How to troubleshoot 'Could not find hash cache for joinId' which is failing always for some users and never for others We had a similar problem while using explicit JOIN in the query (we didn't have sub-queries). We worked it around by switching to sort merge join from hash join (to get it run, though it'll be bit slower than hash join as per documentation) Try adding the hint /*+ USE_SORT_MERGE_JOIN*/ in the SELECT query. Thanks, Kathir On Thu, May 5, 2016 at 10:42 AM, Chabot, Jerry <[email protected]<mailto:[email protected]>> wrote: We are running HBase 0.98.5 with Phoenix 4.2.2. All was well for a period of time (a year or more). But now, some users can no longer search. Others do not have problems for a similar search. Granted, the searched data is different. The 'asset' table was created and maintained using an HBase client. Search uses a Phoenix view on this table. The row key is L,C,A,R. A search that is failing is what we call a multiple locality search. A single locality search is working. In multi-locality search, there is an IN L=(...) clause. Note, the L is the first column in the row key. The query is shown below. SELECT * from "asset" WHERE R=(SELECT MAX(R) from "asset" WHERE L=T1.L and C=T1.C AND A=T1.A AND C=? AND L IN (?)) AND (T1.L in (?) AND T1.T=? AND T1.N ILIKE ? order by T1.N asc nulls first limit 500 The subquery selects the latest revision of each 'asset'. The additional conditions (C=? and L IN (?)) was added to make the subquery more efficient. I did notice there is no corresponding C=? in the primary WHERE clause. The root cause is "Could not find hash cache for joinId: The cache might have expired and have been removed." One recommendation on the Phoenix site is to increase the phoenix.coprocessor.maxSearchCacheTimeToLiveMs. We use the default. This recommendation does not seem applicable because the query fails almost immediately - not after 30 seconds. Some bugs have reported a similar problem. But, they all seem to be multi-tenant. We do not use the multi-tenant property. We enforce via the WHERE clause. We do use a connection pool. Once again, the problem with using a connection pool appears to be if you use multi-tenant. Are there other reasons not to use a connection pool? We are also experiencing an unbalanced workload across our region servers. I have not confirmed, at this time, whether the localities for the users that have failing searches reside on the overloaded region server. Unfortunately, the problem only exists in the HBase clustered environment with controlled access, so it is difficult to enable debug logging. Does anyone have suggestions on how to troubleshoot or theories as to what could be the cause? Other considerations are - rework the query. - upgrade to Phoenix 4.7. But, it has a dependency on HBase 0.98.17. I had all kinds of problems upgrading so I've taken that off the table. - provide an alternative to connection pooling. Not sure this would fix the problem. If it was the cause, why would search consistently work for some users? - replace Phoenix (obviously not a short-term option). Given the search table is maintained by HBase we can't leverage secondary indexes. Therefore, future search enhancements may be limited. <ERROR> 1 2016-05-05T13:07:49.624Z localhost - - - [logger="AssetsResource"] [hpSDID@11 deviceId="-" reqId="33214548506 4175617" threadId="330108"] Error searching assets: query=%7Bname%3Asynthetic%7D,sort=%7Bname%7D,limit=100,skip=0, ... Internal database server error. Caused by: org.apache.phoenix.exception.PhoenixIOException: org.apache.phoenix.exception.PhoenixIOException: org.apache.hadoop.hbase.DoNotRetryIOException: Could not find hash cache for joinId: ^@?g^R(g{. The cache might have expired and have been removed. at org.apache.phoenix.coprocessor.HashJoinRegionScanner.<init>(HashJoinRegionScanner.java:96) at org.apache.phoenix.coprocessor.ScanRegionObserver.doPostScannerOpen(ScanRegionObserver.java:195) at org.apache.phoenix.coprocessor.BaseScannerRegionObserver.postScannerOpen(BaseScannerRegionObserver.java:144) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postScannerOpen(RegionCoprocessorHost.java:1976) at org.apache.hadoop.hbase.regionserver.HRegionServer.scan(HRegionServer.java:3093) at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29587) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2026) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98) at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:114) at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:94) at java.lang.Thread.run(Unknown Source) at org.apache.phoenix.util.ServerUtil.parseServerException(ServerUtil.java:108) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.BaseResultIterators.getIterators(BaseResultIterators.java:536) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.MergeSortResultIterator.getIterators(MergeSortResultIterator.java:48) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.MergeSortResultIterator.minIterator(MergeSortResultIterator.java:84) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.MergeSortResultIterator.next(MergeSortResultIterator.java:111) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.MergeSortTopNResultIterator.next(MergeSortTopNResultIterator.java:87) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.DelegateResultIterator.next(DelegateResultIterator.java:44) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.jdbc.PhoenixResultSet.next(PhoenixResultSet.java:739) ~[phoenix-core-4.2.2.jar:4.2.2] at com.hp.cmx.metadata.connector.phoenix.PhoenixSearchDao.queryUsingJDBC(PhoenixSearchDao.java:556) ~[cmx-core-metadata-core-3.2.0.27.jar:?] ... 53 more Caused by: java.util.concurrent.ExecutionException: org.apache.phoenix.exception.PhoenixIOException: org.apache.hadoop.hbase.DoNotRetryIOException: Could no t find hash cache for joinId: ^@?g^R(g{. The cache might have expired and have been removed. at org.apache.phoenix.coprocessor.HashJoinRegionScanner.<init>(HashJoinRegionScanner.java:96) at org.apache.phoenix.coprocessor.ScanRegionObserver.doPostScannerOpen(ScanRegionObserver.java:195) at org.apache.phoenix.coprocessor.BaseScannerRegionObserver.postScannerOpen(BaseScannerRegionObserver.java:144) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postScannerOpen(RegionCoprocessorHost.java:1976) at org.apache.hadoop.hbase.regionserver.HRegionServer.scan(HRegionServer.java:3093) at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29587) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2026) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98) at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:114) at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:94) at java.lang.Thread.run(Unknown Source) at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.7.0_51] at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.7.0_51] at org.apache.phoenix.iterate.BaseResultIterators.getIterators(BaseResultIterators.java:532) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.MergeSortResultIterator.getIterators(MergeSortResultIterator.java:48) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.MergeSortResultIterator.minIterator(MergeSortResultIterator.java:84) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.MergeSortResultIterator.next(MergeSortResultIterator.java:111) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.MergeSortTopNResultIterator.next(MergeSortTopNResultIterator.java:87) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.DelegateResultIterator.next(DelegateResultIterator.java:44) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.jdbc.PhoenixResultSet.next(PhoenixResultSet.java:739) ~[phoenix-core-4.2.2.jar:4.2.2] at com.hp.cmx.metadata.connector.phoenix.PhoenixSearchDao.queryUsingJDBC(PhoenixSearchDao.java:556) ~[cmx-core-metadata-core-3.2.0.27.jar:?] ... 53 more Caused by: org.apache.phoenix.exception.PhoenixIOException: org.apache.hadoop.hbase.DoNotRetryIOException: Could not find hash cache for joinId: ^@?g^R(g{. The cache might have expired and have been removed. at org.apache.phoenix.coprocessor.HashJoinRegionScanner.<init>(HashJoinRegionScanner.java:96) at org.apache.phoenix.coprocessor.ScanRegionObserver.doPostScannerOpen(ScanRegionObserver.java:195) at org.apache.phoenix.coprocessor.BaseScannerRegionObserver.postScannerOpen(BaseScannerRegionObserver.java:144) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postScannerOpen(RegionCoprocessorHost.java:1976) at org.apache.hadoop.hbase.regionserver.HRegionServer.scan(HRegionServer.java:3093) at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29587) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2026) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98) at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:114) at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:94) at java.lang.Thread.run(Unknown Source) at org.apache.phoenix.util.ServerUtil.parseServerException(ServerUtil.java:108) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.TableResultIterator.getDelegate(TableResultIterator.java:68) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.TableResultIterator.<init>(TableResultIterator.java:85) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.TableResultIterator.<init>(TableResultIterator.java:77) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.ParallelIterators$1.call(ParallelIterators.java:88) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.ParallelIterators$1.call(ParallelIterators.java:83) ~[phoenix-core-4.2.2.jar:4.2.2] at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.7.0_51] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:1.7.0_51] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:1.7.0_51] ... 1 more Caused by: org.apache.hadoop.hbase.DoNotRetryIOException: org.apache.hadoop.hbase.DoNotRetryIOException: Could not find hash cache for joinId: ^@?g^R(g{. Th e cache might have expired and have been removed. at org.apache.phoenix.coprocessor.HashJoinRegionScanner.<init>(HashJoinRegionScanner.java:96) at org.apache.phoenix.coprocessor.ScanRegionObserver.doPostScannerOpen(ScanRegionObserver.java:195) at org.apache.phoenix.coprocessor.BaseScannerRegionObserver.postScannerOpen(BaseScannerRegionObserver.java:144) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postScannerOpen(RegionCoprocessorHost.java:1976) at org.apache.hadoop.hbase.regionserver.HRegionServer.scan(HRegionServer.java:3093) at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29587) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2026) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98) at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:114) at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:94) at java.lang.Thread.run(Unknown Source) at sun.reflect.GeneratedConstructorAccessor288.newInstance(Unknown Source) ~[?:?] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.7.0_51] at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.7.0_51] at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106) ~[hadoop-common-2.7.1.jar:?] at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:95) ~[hadoop-common-2.7.1.jar:?] at org.apache.hadoop.hbase.protobuf.ProtobufUtil.getRemoteException(ProtobufUtil.java:285) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ScannerCallable.openScanner(ScannerCallable.java:316) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:164) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:59) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:114) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:90) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:283) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:188) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:183) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:110) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:738) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.phoenix.iterate.TableResultIterator.getDelegate(TableResultIterator.java:65) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.TableResultIterator.<init>(TableResultIterator.java:85) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.TableResultIterator.<init>(TableResultIterator.java:77) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.ParallelIterators$1.call(ParallelIterators.java:88) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.ParallelIterators$1.call(ParallelIterators.java:83) ~[phoenix-core-4.2.2.jar:4.2.2] at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.7.0_51] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:1.7.0_51] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:1.7.0_51] ... 1 more Caused by: org.apache.hadoop.hbase.ipc.RemoteWithExtrasException: org.apache.hadoop.hbase.DoNotRetryIOException: Could not find hash cache for joinId: ^@?g ^R(g{. The cache might have expired and have been removed. at org.apache.phoenix.coprocessor.HashJoinRegionScanner.<init>(HashJoinRegionScanner.java:96) at org.apache.phoenix.coprocessor.ScanRegionObserver.doPostScannerOpen(ScanRegionObserver.java:195) at org.apache.phoenix.coprocessor.BaseScannerRegionObserver.postScannerOpen(BaseScannerRegionObserver.java:144) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postScannerOpen(RegionCoprocessorHost.java:1976) at org.apache.hadoop.hbase.regionserver.HRegionServer.scan(HRegionServer.java:3093) at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29587) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2026) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98) at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:114) at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:94) at java.lang.Thread.run(Unknown Source) at org.apache.hadoop.hbase.ipc.RpcClient.call(RpcClient.java:1457) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.ipc.RpcClient.callBlockingMethod(RpcClient.java:1661) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.ipc.RpcClient$BlockingRpcChannelImplementation.callBlockingMethod(RpcClient.java:1719) ~[hbase-client-0.98.5-hadoop2.jar: 0.98.5-hadoop2] at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$BlockingStub.scan(ClientProtos.java:29990) ~[hbase-protocol-0.98.5-hadoop2. jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ScannerCallable.openScanner(ScannerCallable.java:308) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:164) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:59) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:114) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:90) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:283) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:188) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-had oop2] at org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:183) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:110) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:738) ~[hbase-client-0.98.5-hadoop2.jar:0.98.5-hadoop2] at org.apache.phoenix.iterate.TableResultIterator.getDelegate(TableResultIterator.java:65) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.TableResultIterator.<init>(TableResultIterator.java:85) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.TableResultIterator.<init>(TableResultIterator.java:77) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.ParallelIterators$1.call(ParallelIterators.java:88) ~[phoenix-core-4.2.2.jar:4.2.2] at org.apache.phoenix.iterate.ParallelIterators$1.call(ParallelIterators.java:83) ~[phoenix-core-4.2.2.jar:4.2.2] at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.7.0_51] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:1.7.0_51] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:1.7.0_51] ... 1 more -Jerry
