Jean-Daniel Cryans jdcryans
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| diff --git a/src/Scanner.java b/src/Scanner.java | |
| index 7345d34..4ab54b3 100644 | |
| --- a/src/Scanner.java | |
| +++ b/src/Scanner.java | |
| @@ -187,6 +187,10 @@ public final class Scanner { | |
| */ | |
| private long scanner_id; | |
| + private boolean prefetching; | |
| + |
jdcryans
/ gist:9556663
Created
March 14, 2014 20:53
creating a new hbase table based on table in another cluster with the same name
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| // using a config that's against the old cluster | |
| HBaseAdmin admin = new HBaseAdmin(HBaseConfiguration.create()); | |
| byte[] tableName = Bytes.toBytes("tsdb"); | |
| HTableDescriptor htd = admin.getTableDescriptor(tableName); | |
| List<HRegionInfo> regions = admin.getTableRegions(tableName); | |
| regions.remove(0); // removing the first region, it has an empty start key | |
| byte[][] startKeys = new byte[regions.size()][]; | |
| for (int i = 0; i < regions.size(); i++) { | |
| startKeys[i] = regions.get(i).getStartKey(); |
jdcryans
/ gist:6722492f35edb5302d1b
Created
October 30, 2015 17:23
tserver deadlock MM vs DeleteTablet
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| Thread 418 (Thread 0x7fa9eb29c700 (LWP 13546)): | |
| #0 0x00000035d180e264 in __lll_lock_wait () from /lib64/libpthread.so.0 | |
| #1 0x00000035d1809508 in _L_lock_854 () from /lib64/libpthread.so.0 | |
| #2 0x00000035d18093d7 in pthread_mutex_lock () from /lib64/libpthread.so.0 | |
| #3 0x0000000000876845 in kudu::tablet::TabletMetadata::Flush() () | |
| #4 0x00000000008794b2 in kudu::tablet::TabletMetadata::UpdateAndFlush(std::tr1::unordered_set<long, std::tr1::hash<long>, std::equal_to<long>, std::allocator<long> > const&, std::vector<std::tr1::shared_ptr<kudu::tablet::RowSetMetadata>, std::allocator<std::tr1::shared_ptr<kudu::tablet::RowSetMetadata> > > const&, long) () | |
| #5 0x0000000000804325 in kudu::tablet::Tablet::FlushMetadata(std::vector<std::tr1::shared_ptr<kudu::tablet::RowSet>, std::allocator<std::tr1::shared_ptr<kudu::tablet::RowSet> > > const&, std::vector<std::tr1::shared_ptr<kudu::tablet::RowSetMetadata>, std::allocator<std::tr1::shared_ptr<kudu::tablet::RowSetMetadata> > > const&, long) () | |
| #6 0x000000000080a49f in |
jdcryans
/ gist:de4c38d9641662e7d5b4
Created
October 30, 2015 17:58
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| Thread 418 (Thread 0x7fa9eb29c700 (LWP 13546)): | |
| #0 0x00000035d180e264 in __lll_lock_wait () from /lib64/libpthread.so.0 | |
| #1 0x00000035d1809508 in _L_lock_854 () from /lib64/libpthread.so.0 | |
| #2 0x00000035d18093d7 in pthread_mutex_lock () from /lib64/libpthread.so.0 | |
| #3 0x0000000000876845 in kudu::tablet::TabletMetadata::Flush() () | |
| #4 0x00000000008794b2 in kudu::tablet::TabletMetadata::UpdateAndFlush(std::tr1::unordered_set<long, std::tr1::hash<long>, std::equal_to<long>, std::allocator<long> > const&, std::vector<std::tr1::shared_ptr<kudu::tablet::RowSetMetadata>, std::allocator<std::tr1::shared_ptr<kudu::tablet::RowSetMetadata> > > const&, long) () | |
| #5 0x0000000000804325 in kudu::tablet::Tablet::FlushMetadata(std::vector<std::tr1::shared_ptr<kudu::tablet::RowSet>, std::allocator<std::tr1::shared_ptr<kudu::tablet::RowSet> > > const&, std::vector<std::tr1::shared_ptr<kudu::tablet::RowSetMetadata>, std::allocator<std::tr1::shared_ptr<kudu::tablet::RowSetMetadata> > > const&, long) () | |
| #6 0x000000000080a49f in |
jdcryans
/ gist:aa79d2d483ceb9f97015
Created
November 3, 2015 22:55
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| I1102 22:55:10.698065 24069 ts_tablet_manager.cc:726] Registered tablet 1e29b40ce0384e6bb09e4fc09a9ed409 | |
| I1102 22:55:10.742638 31857 ts_tablet_manager.cc:599] T 1e29b40ce0384e6bb09e4fc09a9ed409 P 7746b29074c64e56a03dd6c5161fb929: Bootstrapping tablet | |
| I1102 22:55:10.743032 31857 tablet_bootstrap.cc:357] T 1e29b40ce0384e6bb09e4fc09a9ed409 P 7746b29074c64e56a03dd6c5161fb929: Bootstrap starting. | |
| I1102 22:55:10.743201 31857 tablet_bootstrap.cc:520] T 1e29b40ce0384e6bb09e4fc09a9ed409 P 7746b29074c64e56a03dd6c5161fb929: Time spent opening tablet: real 0.000s user 0.000s sys 0.000s | |
| I1102 22:55:10.781862 31857 tablet_bootstrap.cc:460] T 1e29b40ce0384e6bb09e4fc09a9ed409 P 7746b29074c64e56a03dd6c5161fb929: No blocks or log segments found. Creating new log. | |
| I1102 22:55:10.835072 31857 tablet_bootstrap.cc:357] T 1e29b40ce0384e6bb09e4fc09a9ed409 P 7746b29074c64e56a03dd6c5161fb929: No bootstrap required, opened a new log | |
| I1102 22:55:10.835100 31857 ts_tablet_manager.cc:604] T 1e29b40ce0384e6bb09e4fc09a9ed409 P 7746b29074c64 |
jdcryans
/ gist:1df3366b85c8c878ccb766b3caced9b4
Created
October 28, 2016 17:27
YCSB perf with and without tracing
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| Before tracing: | |
| Run #1 | |
| [OVERALL], RunTime(ms), 274163.0 | |
| [OVERALL], Throughput(ops/sec), 54711.97791095079 | |
| [TOTAL_GCS_PS_Scavenge], Count, 2174.0 | |
| [TOTAL_GC_TIME_PS_Scavenge], Time(ms), 2689.0 | |
| [TOTAL_GC_TIME_%_PS_Scavenge], Time(%), 0.9808033906836443 | |
| [TOTAL_GCS_PS_MarkSweep], Count, 0.0 | |
| [TOTAL_GC_TIME_PS_MarkSweep], Time(ms), 0.0 |