Hey Ted, This is what i see in one of region server log(NPE at the bottom): 2017-07-06 19:07:07,778 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 155739ms 2017-07-06 19:07:17,853 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 132731ms 2017-07-06 19:07:28,038 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 4316ms 2017-07-06 19:07:37,819 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 190960ms 2017-07-06 19:07:47,767 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 41231ms 2017-07-06 19:07:57,767 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 222748ms 2017-07-06 19:08:07,973 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 245966ms 2017-07-06 19:08:18,669 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 76257ms 2017-07-06 19:08:28,029 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 78310ms 2017-07-06 19:08:38,459 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 127828ms 2017-07-06 19:08:48,527 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 38647ms 2017-07-06 19:08:58,554 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 185493ms 2017-07-06 19:09:07,779 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 245608ms 2017-07-06 19:09:17,767 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 284400ms 2017-07-06 19:09:27,768 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 271921ms 2017-07-06 19:09:38,380 INFO [ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501_ChoreService_1] regionserver.HRegionServer: ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501-MemstoreFlusherChore requesting flush of SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. because 0 has an old edit so flush to free WALs after random delay 205397ms 2017-07-06 19:09:43,518 INFO [MemStoreFlusher.1] regionserver.HRegion: Flushing 1/1 column families, memstore=102.57 KB 2017-07-06 19:09:43,541 INFO [MemStoreFlusher.1] regionserver.DefaultStoreFlusher: Flushed, sequenceid=163, memsize=102.6 K, hasBloomFilter=true, into tmp file hdfs://ip-10-74-31-169.us-west-2.compute.internal:8020/user/hbase/data/default/SYSTEM.CATALOG/a47ffa359aa4588f5f360790ac8e4561/.tmp/80386bf477b648d1a7edbbb271601e96 2017-07-06 19:09:43,546 INFO [MemStoreFlusher.1] regionserver.StoreFile$Reader: Loaded Delete Family Bloom (CompoundBloomFilter) metadata for 80386bf477b648d1a7edbbb271601e96 2017-07-06 19:09:43,552 INFO [MemStoreFlusher.1] regionserver.StoreFile$Reader: Loaded Delete Family Bloom (CompoundBloomFilter) metadata for 80386bf477b648d1a7edbbb271601e96 2017-07-06 19:09:43,552 INFO [MemStoreFlusher.1] regionserver.HStore: Added hdfs://ip-10-74-31-169.us-west-2.compute.internal:8020/user/hbase/data/default/SYSTEM.CATALOG/a47ffa359aa4588f5f360790ac8e4561/0/80386bf477b648d1a7edbbb271601e96, entries=552, sequenceid=163, filesize=11.4 K 2017-07-06 19:09:43,553 INFO [MemStoreFlusher.1] regionserver.HRegion: Finished memstore flush of ~102.57 KB/105030, currentsize=0 B/0 for region SYSTEM.CATALOG,,1499317930655.a47ffa359aa4588f5f360790ac8e4561. in 35ms, sequenceid=163, compaction requested=false 2017-07-06 19:11:02,141 INFO [LruBlockCacheStatsExecutor] hfile.LruBlockCache: totalSize=4.93 MB, freeSize=4.67 GB, max=4.67 GB, blockCount=2, accesses=14931, hits=14931, hitRatio=100.00%, , cachingAccesses=14931, cachingHits=14931, cachingHitsRatio=100.00%, evictions=4799, evicted=0, evictedPerRun=0.0 2017-07-06 19:11:07,418 INFO [BucketCacheStatsExecutor] bucket.BucketCache: failedBlockAdditions=0, totalSize=11.75 GB, freeSize=11.74 GB, usedSize=8.18 MB, cacheSize=7.29 MB, accesses=65019, hits=64759, IOhitsPerSecond=1, IOTimePerHit=0.00, hitRatio=99.60%, cachingAccesses=65019, cachingHits=64759, cachingHitsRatio=99.60%, evictions=0, evicted=0, evictedPerRun=NaN 2017-07-06 19:11:25,155 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Stopping HBase metrics system... 2017-07-06 19:11:25,156 INFO [ganglia] impl.MetricsSinkAdapter: ganglia thread interrupted. 2017-07-06 19:11:25,156 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system stopped. 2017-07-06 19:11:25,656 INFO [HBase-Metrics2-1] impl.MetricsConfig: loaded properties from hadoop-metrics2-hbase.properties 2017-07-06 19:11:25,657 INFO [HBase-Metrics2-1] impl.MetricsSinkAdapter: Sink ganglia started 2017-07-06 19:11:25,659 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Scheduled snapshot period at 155 second(s). 2017-07-06 19:11:25,659 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system started 2017-07-06 19:16:02,141 INFO [LruBlockCacheStatsExecutor] hfile.LruBlockCache: totalSize=4.93 MB, freeSize=4.67 GB, max=4.67 GB, blockCount=2, accesses=14931, hits=14931, hitRatio=100.00%, , cachingAccesses=14931, cachingHits=14931, cachingHitsRatio=100.00%, evictions=4829, evicted=0, evictedPerRun=0.0 2017-07-06 19:16:07,418 INFO [BucketCacheStatsExecutor] bucket.BucketCache: failedBlockAdditions=0, totalSize=11.75 GB, freeSize=11.74 GB, usedSize=8.18 MB, cacheSize=7.29 MB, accesses=65379, hits=65119, IOhitsPerSecond=1, IOTimePerHit=0.00, hitRatio=99.60%, cachingAccesses=65379, cachingHits=65119, cachingHitsRatio=99.60%, evictions=0, evicted=0, evictedPerRun=NaN 2017-07-06 19:16:25,155 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Stopping HBase metrics system... 2017-07-06 19:16:25,158 INFO [ganglia] impl.MetricsSinkAdapter: ganglia thread interrupted. 2017-07-06 19:16:25,158 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system stopped. 2017-07-06 19:16:25,658 INFO [HBase-Metrics2-1] impl.MetricsConfig: loaded properties from hadoop-metrics2-hbase.properties 2017-07-06 19:16:25,661 INFO [HBase-Metrics2-1] impl.MetricsSinkAdapter: Sink ganglia started 2017-07-06 19:16:25,662 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Scheduled snapshot period at 155 second(s). 2017-07-06 19:16:25,662 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system started 2017-07-06 19:21:02,141 INFO [LruBlockCacheStatsExecutor] hfile.LruBlockCache: totalSize=4.93 MB, freeSize=4.67 GB, max=4.67 GB, blockCount=2, accesses=14931, hits=14931, hitRatio=100.00%, , cachingAccesses=14931, cachingHits=14931, cachingHitsRatio=100.00%, evictions=4859, evicted=0, evictedPerRun=0.0 2017-07-06 19:21:07,418 INFO [BucketCacheStatsExecutor] bucket.BucketCache: failedBlockAdditions=0, totalSize=11.75 GB, freeSize=11.74 GB, usedSize=8.18 MB, cacheSize=7.29 MB, accesses=65739, hits=65479, IOhitsPerSecond=1, IOTimePerHit=0.00, hitRatio=99.60%, cachingAccesses=65739, cachingHits=65479, cachingHitsRatio=99.60%, evictions=0, evicted=0, evictedPerRun=NaN 2017-07-06 19:21:25,155 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Stopping HBase metrics system... 2017-07-06 19:21:25,156 INFO [ganglia] impl.MetricsSinkAdapter: ganglia thread interrupted. 2017-07-06 19:21:25,156 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system stopped. 2017-07-06 19:21:25,656 INFO [HBase-Metrics2-1] impl.MetricsConfig: loaded properties from hadoop-metrics2-hbase.properties 2017-07-06 19:21:25,658 INFO [HBase-Metrics2-1] impl.MetricsSinkAdapter: Sink ganglia started 2017-07-06 19:21:25,660 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Scheduled snapshot period at 155 second(s). 2017-07-06 19:21:25,660 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system started 2017-07-06 19:26:02,141 INFO [LruBlockCacheStatsExecutor] hfile.LruBlockCache: totalSize=4.93 MB, freeSize=4.67 GB, max=4.67 GB, blockCount=2, accesses=14931, hits=14931, hitRatio=100.00%, , cachingAccesses=14931, cachingHits=14931, cachingHitsRatio=100.00%, evictions=4889, evicted=0, evictedPerRun=0.0 2017-07-06 19:26:07,418 INFO [BucketCacheStatsExecutor] bucket.BucketCache: failedBlockAdditions=0, totalSize=11.75 GB, freeSize=11.74 GB, usedSize=8.18 MB, cacheSize=7.29 MB, accesses=66099, hits=65839, IOhitsPerSecond=1, IOTimePerHit=0.00, hitRatio=99.61%, cachingAccesses=66099, cachingHits=65839, cachingHitsRatio=99.61%, evictions=0, evicted=0, evictedPerRun=NaN 2017-07-06 19:26:25,155 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Stopping HBase metrics system... 2017-07-06 19:26:25,158 INFO [ganglia] impl.MetricsSinkAdapter: ganglia thread interrupted. 2017-07-06 19:26:25,158 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system stopped. 2017-07-06 19:26:25,659 INFO [HBase-Metrics2-1] impl.MetricsConfig: loaded properties from hadoop-metrics2-hbase.properties 2017-07-06 19:26:25,660 INFO [HBase-Metrics2-1] impl.MetricsSinkAdapter: Sink ganglia started 2017-07-06 19:26:25,663 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Scheduled snapshot period at 155 second(s). 2017-07-06 19:26:25,663 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system started 2017-07-06 19:31:02,141 INFO [LruBlockCacheStatsExecutor] hfile.LruBlockCache: totalSize=4.93 MB, freeSize=4.67 GB, max=4.67 GB, blockCount=2, accesses=14931, hits=14931, hitRatio=100.00%, , cachingAccesses=14931, cachingHits=14931, cachingHitsRatio=100.00%, evictions=4919, evicted=0, evictedPerRun=0.0 2017-07-06 19:31:07,418 INFO [BucketCacheStatsExecutor] bucket.BucketCache: failedBlockAdditions=0, totalSize=11.75 GB, freeSize=11.74 GB, usedSize=8.18 MB, cacheSize=7.29 MB, accesses=66459, hits=66199, IOhitsPerSecond=1, IOTimePerHit=0.00, hitRatio=99.61%, cachingAccesses=66459, cachingHits=66199, cachingHitsRatio=99.61%, evictions=0, evicted=0, evictedPerRun=NaN 2017-07-06 19:31:25,155 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Stopping HBase metrics system... 2017-07-06 19:31:25,158 INFO [ganglia] impl.MetricsSinkAdapter: ganglia thread interrupted. 2017-07-06 19:31:25,158 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system stopped. 2017-07-06 19:31:25,659 INFO [HBase-Metrics2-1] impl.MetricsConfig: loaded properties from hadoop-metrics2-hbase.properties 2017-07-06 19:31:25,660 INFO [HBase-Metrics2-1] impl.MetricsSinkAdapter: Sink ganglia started 2017-07-06 19:31:25,661 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Scheduled snapshot period at 155 second(s). 2017-07-06 19:31:25,661 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system started 2017-07-06 19:31:40,742 INFO [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.logRoller] wal.FSHLog: Rolled WAL /user/hbase/WALs/ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499365900659 with entries=8, filesize=12.99 KB; new WAL /user/hbase/WALs/ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499369500724 2017-07-06 19:31:40,742 INFO [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.logRoller] wal.FSHLog: Archiving hdfs://ip-10-74-31-169.us-west-2.compute.internal:8020/user/hbase/WALs/ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499362300596 to hdfs://ip-10-74-31-169.us-west-2.compute.internal:8020/user/hbase/oldWALs/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499362300596 2017-07-06 19:31:40,745 INFO [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.logRoller] wal.FSHLog: Archiving hdfs://ip-10-74-31-169.us-west-2.compute.internal:8020/user/hbase/WALs/ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499365900659 to hdfs://ip-10-74-31-169.us-west-2.compute.internal:8020/user/hbase/oldWALs/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499365900659 2017-07-06 19:36:02,141 INFO [LruBlockCacheStatsExecutor] hfile.LruBlockCache: totalSize=4.93 MB, freeSize=4.67 GB, max=4.67 GB, blockCount=2, accesses=14931, hits=14931, hitRatio=100.00%, , cachingAccesses=14931, cachingHits=14931, cachingHitsRatio=100.00%, evictions=4949, evicted=0, evictedPerRun=0.0 2017-07-06 19:36:07,418 INFO [BucketCacheStatsExecutor] bucket.BucketCache: failedBlockAdditions=0, totalSize=11.75 GB, freeSize=11.74 GB, usedSize=8.18 MB, cacheSize=7.29 MB, accesses=66819, hits=66559, IOhitsPerSecond=1, IOTimePerHit=0.00, hitRatio=99.61%, cachingAccesses=66819, cachingHits=66559, cachingHitsRatio=99.61%, evictions=0, evicted=0, evictedPerRun=NaN 2017-07-06 19:36:25,155 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Stopping HBase metrics system... 2017-07-06 19:36:25,158 INFO [ganglia] impl.MetricsSinkAdapter: ganglia thread interrupted. 2017-07-06 19:36:25,158 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system stopped. 2017-07-06 19:36:25,659 INFO [HBase-Metrics2-1] impl.MetricsConfig: loaded properties from hadoop-metrics2-hbase.properties 2017-07-06 19:36:25,661 INFO [HBase-Metrics2-1] impl.MetricsSinkAdapter: Sink ganglia started 2017-07-06 19:36:25,663 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Scheduled snapshot period at 155 second(s). 2017-07-06 19:36:25,663 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system started 2017-07-06 19:41:02,141 INFO [LruBlockCacheStatsExecutor] hfile.LruBlockCache: totalSize=4.93 MB, freeSize=4.67 GB, max=4.67 GB, blockCount=2, accesses=14931, hits=14931, hitRatio=100.00%, , cachingAccesses=14931, cachingHits=14931, cachingHitsRatio=100.00%, evictions=4979, evicted=0, evictedPerRun=0.0 2017-07-06 19:41:07,418 INFO [BucketCacheStatsExecutor] bucket.BucketCache: failedBlockAdditions=0, totalSize=11.75 GB, freeSize=11.74 GB, usedSize=8.18 MB, cacheSize=7.29 MB, accesses=67179, hits=66919, IOhitsPerSecond=1, IOTimePerHit=0.00, hitRatio=99.61%, cachingAccesses=67179, cachingHits=66919, cachingHitsRatio=99.61%, evictions=0, evicted=0, evictedPerRun=NaN 2017-07-06 19:41:25,155 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Stopping HBase metrics system... 2017-07-06 19:41:25,156 INFO [ganglia] impl.MetricsSinkAdapter: ganglia thread interrupted. 2017-07-06 19:41:25,156 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system stopped. 2017-07-06 19:41:25,657 INFO [HBase-Metrics2-1] impl.MetricsConfig: loaded properties from hadoop-metrics2-hbase.properties 2017-07-06 19:41:25,658 INFO [HBase-Metrics2-1] impl.MetricsSinkAdapter: Sink ganglia started 2017-07-06 19:41:25,660 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Scheduled snapshot period at 155 second(s). 2017-07-06 19:41:25,660 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system started 2017-07-06 19:46:02,141 INFO [LruBlockCacheStatsExecutor] hfile.LruBlockCache: totalSize=4.93 MB, freeSize=4.67 GB, max=4.67 GB, blockCount=2, accesses=14931, hits=14931, hitRatio=100.00%, , cachingAccesses=14931, cachingHits=14931, cachingHitsRatio=100.00%, evictions=5009, evicted=0, evictedPerRun=0.0 2017-07-06 19:46:07,418 INFO [BucketCacheStatsExecutor] bucket.BucketCache: failedBlockAdditions=0, totalSize=11.75 GB, freeSize=11.74 GB, usedSize=8.18 MB, cacheSize=7.29 MB, accesses=67539, hits=67279, IOhitsPerSecond=1, IOTimePerHit=0.00, hitRatio=99.62%, cachingAccesses=67539, cachingHits=67279, cachingHitsRatio=99.62%, evictions=0, evicted=0, evictedPerRun=NaN 2017-07-06 19:46:25,156 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Stopping HBase metrics system... 2017-07-06 19:46:25,158 INFO [ganglia] impl.MetricsSinkAdapter: ganglia thread interrupted. 2017-07-06 19:46:25,158 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system stopped. 2017-07-06 19:46:25,659 INFO [HBase-Metrics2-1] impl.MetricsConfig: loaded properties from hadoop-metrics2-hbase.properties 2017-07-06 19:46:25,660 INFO [HBase-Metrics2-1] impl.MetricsSinkAdapter: Sink ganglia started 2017-07-06 19:46:25,662 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: Scheduled snapshot period at 155 second(s). 2017-07-06 19:46:25,662 INFO [HBase-Metrics2-1] impl.MetricsSystemImpl: HBase metrics system started 2017-07-06 19:48:30,412 INFO [B.defaultRpcServer.handler=175,queue=15,port=16020] zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x3da2857f connecting to ZooKeeper ensemble=ip-10-74-31-169.us-west-2.compute.internal:2181 2017-07-06 19:48:30,412 INFO [B.defaultRpcServer.handler=175,queue=15,port=16020] zookeeper.ZooKeeper: Initiating client connection, connectString=ip-10-74-31-169.us-west-2.compute.internal:2181 sessionTimeout=90000 watcher=hconnection-0x3da2857f0x0, quorum=ip-10-74-31-169.us-west-2.compute.internal:2181, baseZNode=/hbase 2017-07-06 19:48:30,414 INFO [B.defaultRpcServer.handler=175,queue=15,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Opening socket connection to server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181. Will not attempt to authenticate using SASL (unknown error) 2017-07-06 19:48:30,414 INFO [B.defaultRpcServer.handler=175,queue=15,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Socket connection established to ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, initiating session 2017-07-06 19:48:30,415 INFO [B.defaultRpcServer.handler=175,queue=15,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Session establishment complete on server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, sessionid = 0x15d150266d00cd2, negotiated timeout = 40000 2017-07-06 19:48:30,426 INFO [B.defaultRpcServer.handler=175,queue=15,port=16020] client.ConnectionManager$HConnectionImplementation: Closing zookeeper sessionid=0x15d150266d00cd2 2017-07-06 19:48:30,427 INFO [B.defaultRpcServer.handler=175,queue=15,port=16020] zookeeper.ZooKeeper: Session: 0x15d150266d00cd2 closed 2017-07-06 19:48:30,427 INFO [B.defaultRpcServer.handler=175,queue=15,port=16020-EventThread] zookeeper.ClientCnxn: EventThread shut down for session: 0x15d150266d00cd2 2017-07-06 19:48:30,483 INFO [B.defaultRpcServer.handler=64,queue=4,port=16020] zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x41f2d6a0 connecting to ZooKeeper ensemble=ip-10-74-31-169.us-west-2.compute.internal:2181 2017-07-06 19:48:30,483 INFO [B.defaultRpcServer.handler=64,queue=4,port=16020] zookeeper.ZooKeeper: Initiating client connection, connectString=ip-10-74-31-169.us-west-2.compute.internal:2181 sessionTimeout=90000 watcher=hconnection-0x41f2d6a00x0, quorum=ip-10-74-31-169.us-west-2.compute.internal:2181, baseZNode=/hbase 2017-07-06 19:48:30,484 INFO [B.defaultRpcServer.handler=64,queue=4,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Opening socket connection to server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181. Will not attempt to authenticate using SASL (unknown error) 2017-07-06 19:48:30,485 INFO [B.defaultRpcServer.handler=64,queue=4,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Socket connection established to ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, initiating session 2017-07-06 19:48:30,486 INFO [B.defaultRpcServer.handler=64,queue=4,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Session establishment complete on server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, sessionid = 0x15d150266d00cd3, negotiated timeout = 40000 2017-07-06 19:48:30,493 INFO [B.defaultRpcServer.handler=64,queue=4,port=16020] client.ConnectionManager$HConnectionImplementation: Closing zookeeper sessionid=0x15d150266d00cd3 2017-07-06 19:48:30,493 INFO [B.defaultRpcServer.handler=64,queue=4,port=16020] zookeeper.ZooKeeper: Session: 0x15d150266d00cd3 closed 2017-07-06 19:48:30,493 INFO [B.defaultRpcServer.handler=64,queue=4,port=16020-EventThread] zookeeper.ClientCnxn: EventThread shut down for session: 0x15d150266d00cd3 2017-07-06 19:48:30,520 INFO [B.defaultRpcServer.handler=53,queue=13,port=16020] zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x2765c233 connecting to ZooKeeper ensemble=ip-10-74-31-169.us-west-2.compute.internal:2181 2017-07-06 19:48:30,520 INFO [B.defaultRpcServer.handler=53,queue=13,port=16020] zookeeper.ZooKeeper: Initiating client connection, connectString=ip-10-74-31-169.us-west-2.compute.internal:2181 sessionTimeout=90000 watcher=hconnection-0x2765c2330x0, quorum=ip-10-74-31-169.us-west-2.compute.internal:2181, baseZNode=/hbase 2017-07-06 19:48:30,522 INFO [B.defaultRpcServer.handler=53,queue=13,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Opening socket connection to server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181. Will not attempt to authenticate using SASL (unknown error) 2017-07-06 19:48:30,523 INFO [B.defaultRpcServer.handler=53,queue=13,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Socket connection established to ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, initiating session 2017-07-06 19:48:30,524 INFO [B.defaultRpcServer.handler=53,queue=13,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Session establishment complete on server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, sessionid = 0x15d150266d00cd4, negotiated timeout = 40000 2017-07-06 19:48:30,529 INFO [B.defaultRpcServer.handler=53,queue=13,port=16020] client.ConnectionManager$HConnectionImplementation: Closing zookeeper sessionid=0x15d150266d00cd4 2017-07-06 19:48:30,530 INFO [B.defaultRpcServer.handler=53,queue=13,port=16020] zookeeper.ZooKeeper: Session: 0x15d150266d00cd4 closed 2017-07-06 19:48:30,530 INFO [B.defaultRpcServer.handler=53,queue=13,port=16020-EventThread] zookeeper.ClientCnxn: EventThread shut down for session: 0x15d150266d00cd4 2017-07-06 19:48:30,558 INFO [B.defaultRpcServer.handler=112,queue=12,port=16020] zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x31d0fcd8 connecting to ZooKeeper ensemble=ip-10-74-31-169.us-west-2.compute.internal:2181 2017-07-06 19:48:30,558 INFO [B.defaultRpcServer.handler=112,queue=12,port=16020] zookeeper.ZooKeeper: Initiating client connection, connectString=ip-10-74-31-169.us-west-2.compute.internal:2181 sessionTimeout=90000 watcher=hconnection-0x31d0fcd80x0, quorum=ip-10-74-31-169.us-west-2.compute.internal:2181, baseZNode=/hbase 2017-07-06 19:48:30,559 INFO [B.defaultRpcServer.handler=112,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Opening socket connection to server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181. Will not attempt to authenticate using SASL (unknown error) 2017-07-06 19:48:30,559 INFO [B.defaultRpcServer.handler=112,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Socket connection established to ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, initiating session 2017-07-06 19:48:30,560 INFO [B.defaultRpcServer.handler=112,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Session establishment complete on server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, sessionid = 0x15d150266d00cd5, negotiated timeout = 40000 2017-07-06 19:48:30,565 INFO [B.defaultRpcServer.handler=112,queue=12,port=16020] client.ConnectionManager$HConnectionImplementation: Closing zookeeper sessionid=0x15d150266d00cd5 2017-07-06 19:48:30,566 INFO [B.defaultRpcServer.handler=112,queue=12,port=16020] zookeeper.ZooKeeper: Session: 0x15d150266d00cd5 closed 2017-07-06 19:48:30,566 INFO [B.defaultRpcServer.handler=112,queue=12,port=16020-EventThread] zookeeper.ClientCnxn: EventThread shut down for session: 0x15d150266d00cd5 2017-07-06 19:48:30,594 INFO [B.defaultRpcServer.handler=12,queue=12,port=16020] zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x336d2534 connecting to ZooKeeper ensemble=ip-10-74-31-169.us-west-2.compute.internal:2181 2017-07-06 19:48:30,594 INFO [B.defaultRpcServer.handler=12,queue=12,port=16020] zookeeper.ZooKeeper: Initiating client connection, connectString=ip-10-74-31-169.us-west-2.compute.internal:2181 sessionTimeout=90000 watcher=hconnection-0x336d25340x0, quorum=ip-10-74-31-169.us-west-2.compute.internal:2181, baseZNode=/hbase 2017-07-06 19:48:30,596 INFO [B.defaultRpcServer.handler=12,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Opening socket connection to server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181. Will not attempt to authenticate using SASL (unknown error) 2017-07-06 19:48:30,596 INFO [B.defaultRpcServer.handler=12,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Socket connection established to ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, initiating session 2017-07-06 19:48:30,597 INFO [B.defaultRpcServer.handler=12,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Session establishment complete on server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, sessionid = 0x15d150266d00cd6, negotiated timeout = 40000 2017-07-06 19:48:30,603 INFO [B.defaultRpcServer.handler=12,queue=12,port=16020] client.ConnectionManager$HConnectionImplementation: Closing zookeeper sessionid=0x15d150266d00cd6 2017-07-06 19:48:30,604 INFO [B.defaultRpcServer.handler=12,queue=12,port=16020] zookeeper.ZooKeeper: Session: 0x15d150266d00cd6 closed 2017-07-06 19:48:30,604 INFO [B.defaultRpcServer.handler=12,queue=12,port=16020-EventThread] zookeeper.ClientCnxn: EventThread shut down for session: 0x15d150266d00cd6 2017-07-06 19:48:36,166 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x7afe923b connecting to ZooKeeper ensemble=ip-10-74-31-169.us-west-2.compute.internal:2181 2017-07-06 19:48:36,166 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] zookeeper.ZooKeeper: Initiating client connection, connectString=ip-10-74-31-169.us-west-2.compute.internal:2181 sessionTimeout=90000 watcher=hconnection-0x7afe923b0x0, quorum=ip-10-74-31-169.us-west-2.compute.internal:2181, baseZNode=/hbase 2017-07-06 19:48:36,167 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Opening socket connection to server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181. Will not attempt to authenticate using SASL (unknown error) 2017-07-06 19:48:36,168 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Socket connection established to ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, initiating session 2017-07-06 19:48:36,168 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Session establishment complete on server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, sessionid = 0x15d150266d00cd8, negotiated timeout = 40000 2017-07-06 19:48:36,179 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] client.ConnectionManager$HConnectionImplementation: Closing zookeeper sessionid=0x15d150266d00cd8 2017-07-06 19:48:36,180 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] zookeeper.ZooKeeper: Session: 0x15d150266d00cd8 closed 2017-07-06 19:48:36,180 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-EventThread] zookeeper.ClientCnxn: EventThread shut down for session: 0x15d150266d00cd8 2017-07-06 19:48:36,191 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x553c739a connecting to ZooKeeper ensemble=ip-10-74-31-169.us-west-2.compute.internal:2181 2017-07-06 19:48:36,191 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] zookeeper.ZooKeeper: Initiating client connection, connectString=ip-10-74-31-169.us-west-2.compute.internal:2181 sessionTimeout=90000 watcher=hconnection-0x553c739a0x0, quorum=ip-10-74-31-169.us-west-2.compute.internal:2181, baseZNode=/hbase 2017-07-06 19:48:36,193 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Opening socket connection to server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181. Will not attempt to authenticate using SASL (unknown error) 2017-07-06 19:48:36,194 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Socket connection established to ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, initiating session 2017-07-06 19:48:36,195 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Session establishment complete on server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, sessionid = 0x15d150266d00cd9, negotiated timeout = 40000 2017-07-06 19:48:36,202 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] client.ConnectionManager$HConnectionImplementation: Closing zookeeper sessionid=0x15d150266d00cd9 2017-07-06 19:48:36,203 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] zookeeper.ZooKeeper: Session: 0x15d150266d00cd9 closed 2017-07-06 19:48:36,203 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-EventThread] zookeeper.ClientCnxn: EventThread shut down for session: 0x15d150266d00cd9 2017-07-06 19:48:36,214 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x7f2df76f connecting to ZooKeeper ensemble=ip-10-74-31-169.us-west-2.compute.internal:2181 2017-07-06 19:48:36,214 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] zookeeper.ZooKeeper: Initiating client connection, connectString=ip-10-74-31-169.us-west-2.compute.internal:2181 sessionTimeout=90000 watcher=hconnection-0x7f2df76f0x0, quorum=ip-10-74-31-169.us-west-2.compute.internal:2181, baseZNode=/hbase 2017-07-06 19:48:36,215 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Opening socket connection to server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181. Will not attempt to authenticate using SASL (unknown error) 2017-07-06 19:48:36,216 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Socket connection established to ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, initiating session 2017-07-06 19:48:36,216 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-SendThread(ip-10-74-31-169.us-west-2.compute.internal:2181)] zookeeper.ClientCnxn: Session establishment complete on server ip-10-74-31-169.us-west-2.compute.internal/10.74.31.169:2181, sessionid = 0x15d150266d00cda, negotiated timeout = 40000 2017-07-06 19:48:36,222 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] client.ConnectionManager$HConnectionImplementation: Closing zookeeper sessionid=0x15d150266d00cda 2017-07-06 19:48:36,222 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020] zookeeper.ZooKeeper: Session: 0x15d150266d00cda closed 2017-07-06 19:48:36,225 INFO [B.defaultRpcServer.handler=172,queue=12,port=16020-EventThread] zookeeper.ClientCnxn: EventThread shut down for session: 0x15d150266d00cda 2017-07-06 19:48:38,085 WARN [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.append-pool1-t1] wal.FSHLog: Append sequenceId=7845, requesting roll of WAL java.lang.NullPointerException at org.apache.hadoop.fs.FSOutputSummer.write(FSOutputSummer.java:106) at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.write(FSDataOutputStream.java:60) at java.io.DataOutputStream.write(DataOutputStream.java:107) at org.apache.hadoop.hbase.KeyValue.oswrite(KeyValue.java:2571) at org.apache.hadoop.hbase.KeyValueUtil.oswrite(KeyValueUtil.java:623) at org.apache.hadoop.hbase.regionserver.wal.WALCellCodec$EnsureKvEncoder.write(WALCellCodec.java:338) at org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter.append(ProtobufLogWriter.java:122) at org.apache.hadoop.hbase.regionserver.wal.FSHLog$RingBufferEventHandler.append(FSHLog.java:1909) at org.apache.hadoop.hbase.regionserver.wal.FSHLog$RingBufferEventHandler.onEvent(FSHLog.java:1773) at org.apache.hadoop.hbase.regionserver.wal.FSHLog$RingBufferEventHandler.onEvent(FSHLog.java:1695) at com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:128) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 2017-07-06 19:48:38,097 WARN [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.logRoller] wal.FSHLog: Failed sync-before-close but no outstanding appends; closing WAL: org.apache.hadoop.hbase.regionserver.wal.DamagedWALException: Append sequenceId=7845, requesting roll of WAL 2017-07-06 19:48:38,102 INFO [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.logRoller] wal.FSHLog: Rolled WAL /user/hbase/WALs/ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499369500724 with entries=0, filesize=174 B; new WAL /user/hbase/WALs/ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499370518086 2017-07-06 19:48:38,102 INFO [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.logRoller] wal.FSHLog: Archiving hdfs://ip-10-74-31-169.us-west-2.compute.internal:8020/user/hbase/WALs/ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499369500724 to hdfs://ip-10-74-31-169.us-west-2.compute.internal:8020/user/hbase/oldWALs/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499369500724 2017-07-06 19:48:39,235 WARN [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.append-pool1-t1] wal.FSHLog: Append sequenceId=7846, requesting roll of WAL java.lang.NullPointerException at org.apache.hadoop.fs.FSOutputSummer.write(FSOutputSummer.java:106) at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.write(FSDataOutputStream.java:60) at java.io.DataOutputStream.write(DataOutputStream.java:107) at org.apache.hadoop.hbase.KeyValue.oswrite(KeyValue.java:2571) at org.apache.hadoop.hbase.KeyValueUtil.oswrite(KeyValueUtil.java:623) at org.apache.hadoop.hbase.regionserver.wal.WALCellCodec$EnsureKvEncoder.write(WALCellCodec.java:338) at org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter.append(ProtobufLogWriter.java:122) at org.apache.hadoop.hbase.regionserver.wal.FSHLog$RingBufferEventHandler.append(FSHLog.java:1909) at org.apache.hadoop.hbase.regionserver.wal.FSHLog$RingBufferEventHandler.onEvent(FSHLog.java:1773) at org.apache.hadoop.hbase.regionserver.wal.FSHLog$RingBufferEventHandler.onEvent(FSHLog.java:1695) at com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:128) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 2017-07-06 19:48:39,255 WARN [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.logRoller] wal.FSHLog: Failed sync-before-close but no outstanding appends; closing WAL: org.apache.hadoop.hbase.regionserver.wal.DamagedWALException: Append sequenceId=7846, requesting roll of WAL 2017-07-06 19:48:39,261 INFO [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.logRoller] wal.FSHLog: Rolled WAL /user/hbase/WALs/ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499370518086 with entries=0, filesize=174 B; new WAL /user/hbase/WALs/ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499370519235 2017-07-06 19:48:39,261 INFO [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.logRoller] wal.FSHLog: Archiving hdfs://ip-10-74-31-169.us-west-2.compute.internal:8020/user/hbase/WALs/ip-10-74-5-153.us-west-2.compute.internal,16020,1499320260501/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499370518086 to hdfs://ip-10-74-31-169.us-west-2.compute.internal:8020/user/hbase/oldWALs/ip-10-74-5-153.us-west-2.compute.internal%2C16020%2C1499320260501.default.1499370518086 2017-07-06 19:48:40,322 WARN [regionserver/ip-10-74-5-153.us-west-2.compute.internal/10.74.5.153:16020.append-pool1-t1] wal.FSHLog: Append sequenceId=7847, requesting roll of WAL java.lang.NullPointerException at org.apache.hadoop.fs.FSOutputSummer.write(FSOutputSummer.java:106) at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.write(FSDataOutputStream.java:60) at java.io.DataOutputStream.write(DataOutputStream.java:107) at org.apache.hadoop.hbase.KeyValue.oswrite(KeyValue.java:2571) at org.apache.hadoop.hbase.KeyValueUtil.oswrite(KeyValueUtil.java:623) at org.apache.hadoop.hbase.regionserver.wal.WALCellCodec$EnsureKvEncoder.write(WALCellCodec.java:338) at org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter.append(ProtobufLogWriter.java:122) at org.apache.hadoop.hbase.regionserver.wal.FSHLog$RingBufferEventHandler.append(FSHLog.java:1909) at org.apache.hadoop.hbase.regionserver.wal.FSHLog$RingBufferEventHandler.onEvent(FSHLog.java:1773) at org.apache.hadoop.hbase.regionserver.wal.FSHLog$RingBufferEventHandler.onEvent(FSHLog.java:1695) at com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:128) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)
On Thu, Jul 6, 2017 at 1:55 PM, Ted Yu <yuzhih...@gmail.com> wrote: > HBASE-16960 mentioned the following : > > Caused by: java.net.SocketTimeoutException: 20000 millis timeout while > waiting for channel to be ready for read > > Do you see similar line in region server log ? > > Cheers > > On Thu, Jul 6, 2017 at 1:48 PM, anil gupta <anilgupt...@gmail.com> wrote: > > > Hi All, > > > > We are running HBase/Phoenix on EMR5.2(HBase1.2.3 and Phoenix4.7) and we > running into following exception when we are trying to load data into one > of our Phoenix table: > > 2017-07-06 19:57:57,507 INFO [hconnection-0x60e5272-shared--pool2-t249] > org.apache.hadoop.hbase.client.AsyncProcess: #1, table=DE.CONFIG_DATA, > attempt=30/35 failed=38ops, last exception: org.apache.hadoop.hbase. > regionserver.wal.DamagedWALException: org.apache.hadoop.hbase. > regionserver.wal.DamagedWALException: Append sequenceId=8689, requesting > roll of WAL > > at org.apache.hadoop.hbase.regionserver.wal.FSHLog$ > RingBufferEventHandler.append(FSHLog.java:1921) > > at org.apache.hadoop.hbase.regionserver.wal.FSHLog$ > RingBufferEventHandler.onEvent(FSHLog.java:1773) > > at org.apache.hadoop.hbase.regionserver.wal.FSHLog$ > RingBufferEventHandler.onEvent(FSHLog.java:1695) > > at com.lmax.disruptor.BatchEventProcessor.run( > BatchEventProcessor.java:128) > > 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) > > > > We are OK with wiping out this table and rebuilding the dataset. We > tried to drop the table and recreate the table but it didnt fix it. > > Can anyone please let us know how can we get rid of above problem? Are > we running into https://issues.apache.org/jira/browse/HBASE-16960? > > > > > > -- > > Thanks & Regards, > > Anil Gupta > > > -- Thanks & Regards, Anil Gupta